Tools for teen moms to reduce infant obesity: a randomized clinical trial

BMC Public Health

Mackenzie Robson³  Alice Hoffman³  Gary Hsieh²  Kami Silk¹  Mildred A Horodynski³ 

[1] Department of Communication, Michigan State University, 404 Wilson Road, East Lansing 48824, MI, USA;Department of Human Centered Design and Engineering, University of Washington, 414 Sieg Hall, Seattle 98195, WA, USA;College of Nursing, Michigan State University, 1355 Bogue Street, Bott Nursing Building, East Lansing 48824, MI, USA

关键词: Intervention;    Low-income population;    Technology;    Social media;    Obesity;    Infant;   

Others  :  1090531
DOI  :  10.1186/s12889-015-1345-x

 received in 2014-12-23, accepted in 2015-01-02,  发布年份 2015

【 摘 要 】

Background

Unhealthy infant feeding practices, such as a combination of formula feeding and early introduction of solids may lead to rapid or excessive weight gain in early infancy. Adolescent mothers’ feeding behaviors are most directly related to infant weight gain in the first year of life. Compared to adult mothers, adolescent mothers are less knowledgeable, less responsive, more controlling, and less skilled in infant feeding, which interferes with infants’ healthy growth. The Tools for Teen Moms trial aims to compare the effect of a social media intervention for low-income adolescent, first-time mothers of infants 2 months of age or younger, versus standard care on infant weight, maternal responsiveness, and feeding style and practices. The intervention is conducted during the infant’s first four months of life to promote healthy transition to solids during their first year. Tools for Teen Moms is an intervention delivered via a social media platform that actively engages and coaches low-income adolescent mothers in infant-centered feeding to reduce rapid/excessive infant weight gain in the first six months of life.

Methods/Design

We describe our study protocol for a randomized control trial with an anticipated sample of 100 low-income African- American and Caucasian adolescent, first–time mothers of infants. Participants are recruited through Maternal-Infant Health Programs in four counties in Michigan, USA. Participants are randomly assigned to the intervention or the control group. The intervention provides infant feeding information to mothers via a web-based application, and includes daily behavioral challenges, text message reminders, discussion forums, and website information as a comprehensive social media strategy over 6 weeks. Participants continue to receive usual care during the intervention. Main maternal outcomes include: (a) maternal responsiveness, (b) feeding style, and (c) feeding practices. The primary infant outcome is infant weight. Data collection occurs at baseline, and when the baby is 3 and 6 months old.

Discussion

Expected outcomes will address the effectiveness of the social media intervention in helping teen mothers develop healthy infant feeding practices that contribute to reducing the risk of early onset childhood obesity.

Trial registration

Clinical Trials.Gov NCT02244424, June 24, 2014

【 授权许可】

   
2015 Horodynski et al.; licensee BioMed Central.

【 参考文献 】

• [1]Baird J, Fisher D, Lucas P, Kleijnen J, Roberts H, Law C: Being big or growing fast: systematic review of size and growth in infancy and later obesity. BMJ 2005, 331:929-34.
• [2]Gillman M, Rifas-Shiman S, Camargo C, Berkey C, Frazier A, Rockett H, et al.: Risk of overweight among adolescents who were breastfed as infants. J Am Med Assoc 2001, 16:2461-7.
• [3]Stettler N, Kumanyika S, Katz S, Zemel B, Stallings V: Rapid weight gain during infancy and obesity in young adulthood in a cohort of African Americans. Am J Clin Nutr 2003, 77:1374-8.
• [4]Polmamus B, Dalenius K, Borland E, Mackintosh H, Smith B, Grummer-Strawn L: Pediatric nutrition surveillance: 2007 report. U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, Atlanta, GA; 2009.
• [5]Polmamus B, Dalenius K, Mackintosh H, Smith B, Grummer-Strawn L: Pediatric nutrition surveillance: 2009 report. U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, Atlanta, GA; 2011.
• [6]Ogden C, Flegal K, Carroll M, Johnson C: Prevalence and trends in overweight among US children and adolescents, 1999–2000. J Am Med Assoc 2002, 288:1728-32.
• [7]Barlow S: Expert committee recommendations regarding the prevention, assessment, and treatment of child and adolescent overweight and obesity: summary report. Pediatrics 2007, 120:S164-92.
• [8]Parsons T, Power C, Manor O: Fetal and early life growth and body mass index from birth to early adulthood in 1958 British cohort: longitudinal study. BMJ 2003, 323:1331-5.
• [9]Swinburn B: Success of community intervention to combat childhood obesity varies depending on the target age group. In 11th International Conference on Obesity. ., Stockholm; 2010.
• [10]Harrington J, Nguyen V, Paulson J, Garland R, Paseuinelli L, Lewis D: Identifying the “tipping point” age for overweight pediatric patients. Clin Pediatr (Phila) 2010, 49:638.
• [11]Toschke AM, Grote V, Koletzko B, von Kries R: Identifying children at high risk for overweight at school entry by weight gain during the first 2 years. JAMA Pediatr 2004, 158:449-52.
• [12]Paul IM, Bartok CJ, Downs DS, Stifter CA, Ventura AK, Birch LL: Opportunities for the primary prevention of obesity during infancy. Adv Pediatr 2009, 56:107-133.
• [13]Yanovski JA: Rapid weight gain during infancy as a predictor of adult obesity. Am J Clin Nutr 2003, 77:1350-1.
• [14]Goodell LS, Wakefield DB, Ferris AM: Rapid weight gain during the first year of life predicts obesity in 2–3 year olds from a low-income, minority population. J Community Health 2009, 34:370-5.
• [15]Taveras EM, Rifas-Shiman SL, Belfort MB, Kleinman KP, Oken E, Gillman MW: Weight status in the first 6 months of life and obesity at 3 years of age. Pediatrics 2009, 123:1177-83.
• [16]Mennella JA, Ventura AK, Beauchamp GK: Differential growth patterns among healthy infants fed protein hydrolysate or cow-milk formulas. Pediatrics 2011, 127:110-8.
• [17]Monasta L, Batty G, Cattaneo A, Lutje V, Ronfani L, Van Lenthe F, et al.: Early-life determinants of overweight and obesity: a review of systematic reviews. Obes Rev 2010, 11:695-708.
• [18]Montiero P, Victoria C: Rapid growth in infancy and childhood and obesity in later life- a systematic review. Obes Rev 2005, 6:143-54.
• [19]Cali AM, Caprio S: Obesity in children and adolescents. J Clin Endocrinol Metab 2008, 93:S31-6.
• [20]Ong K: Early determinants of obesity. Endocr Dev 2010, 19:53-61.
• [21]Ong KK, Loos RJF: Rapid infancy weight gain and subsequent obesity: systematic reviews and hopeful suggestions. Acta Paediatr 2007, 95:904-8.
• [22]Hawkins SS, Cole TJ, Law C: An ecological systems approach to examining risk factors for early childhood overweight: findings from the UK Millenium Cohort Study. J Epidemiol Community Health 2009, 63:147-55.
• [23]Huh SY, Rifas-Shiman SL, Taveras EM, Oken E, Gillman MW: Timing of solid food introduction and risk of obesity in preschool-aged children. Pediatrics 2011, 127:e544-51.
• [24]Brophy S, Cooksey R, Gravenor MB, Mistry R, Thomas N, Lyons RA, et al.: Risk factors for childhood obesity at age 5: analysis of the millennium cohort study. BMC Public Health 2009, 9:467.
• [25]Sloan S, Gildea A, Stewart M, Sneddon H, Iwaniec D: Early weaning is related to weight and rate of weight gain in infancy. Child Care Health Dev 2008, 34:59-64.
• [26]Preventing childhood obesity in early care and education programs: selected standards from caring for our children. [http://cfoc.nrckids.org/].
• [27]Ong KK, Ahmed ML, Emmett PM, Preece MA, Dunger DB: Association between postnatal catch-up growth and obesity in childhood: prospective cohort study. Br Med J 2000, 320:967.
• [28]Stettler N, Zemel BS, Kumanyika S, Stallings VA: Infant weight gain and childhood overweight status in a multicenter, cohort study. Pediatrics 2002, 109:194-9.
• [29]Dennison BA, Edmunds LS, Stratton HH, Pruzek RM: Rapid infant weight gain predicts childhood overweight. Obesity 2006, 14:491-9.
• [30]Kavanagh KF, Cohen RJ, Heinig MJ, Dewey KG: Educational intervention to modify bottle-feeding behaviors among formula-feeding mothers in the WIC program: impact on infant formula intake and weight gain. J Nutr Educ Behav 2008, 40:244-50.
• [31]Worobey J, Lopez MI, Hoffman DJ: Maternal behavior and infant weight gain in the first year. J Nutr Educ Behav 2009, 41:169-75.
• [32]Baughcum AE, Burklow KA, Deeks CM, Powers SW, Whitaker RC: Maternal feeding practices and childhood obesity: a focus group study of low-income mothers. JAMA Pediatr 1998, 152:1010-4.
• [33]Mihrshahi S, Battistutta D, Magarey A, Daniels LA: Determinants of rapid weight gain during infancy: baseline results from the NOURISH randomised controlled trial. BMC Pediatr 2011, 11:99.
• [34]Karp SM, Lutenbacher M: Infant feeding practices of young mothers. MCN Am J Matern Nurs 2011, 36:98-103.
• [35]Fein SB, Labiner-Wolfe J, Scanlon KS, Grummer-Strawn LM: Selected complementary feeding practices and their association with maternal education. Pediatrics 2008, 122(Suppl 2):S91-7.
• [36]Spear H: Breastfeeding behaviors and experiences of adolescent mothers. MCN Am J Matern Nurs 2006, 31:106-13.
• [37]Tamis-Lemonda CS, Shannon J, Spellman M: Low-income adolescent mothers’ knowledge about domains of child development. Infant Ment Health J 2002, 23:88-103.
• [38]Coll CTG, Vohr BR, Hoffman J, Oh W: Maternal and environmental factors affecting developmental outcomes of infants and adolescent mothers. J Dev Behav Pediatr 1986, 7:230-6.
• [39]Taveras EM, Scanlon KS, Rifas-Shiman SL, Rich-Edwards JW, Gillman MW: Association of breastfeeding with maternal control of infant feeding at age 1 year. Pediatrics 2004, 144:240-5.
• [40]Clark HR, Goyder E, Bissel P, Blank L, Peters J: How do parents’ child-feeding behaviours influence child weight? Implications for childhood obesity policy. J Public Health (Bangkok) 2007, 29:132-41.
• [41]Drake EE, Humenick SS, Amaankwa L, Younger J, Roux G: Predictors of maternal responsiveness. J Nurs Scholarsh 2007, 39:119-25.
• [42]Sacco LM, Bentley ME, Carby-Shields K, Borja JB, Goldman BD: Assessment of infant feeding styles among low income African American mothers: comparing reported and observed behaviors. Appetite 2007, 49:131-40.
• [43]Bentley ME, Gavin L, Black M, Teti L: Infant feeding practices of low-income, African American mothers: comparing reported and observed behaviors. Appetite 1999, 49:1085-100.
• [44]American Academy of Pediatrics: Pediatric nutrition handbook. 5th edition. American Academy of Pediatrics, Elk Grove Village, IL; 2004.
• [45]Stettler N: Nature and strength of epidemiological evidence for origins of childhood and adulthood obesity in the first year of life. Int J Obes 2007, 31:1035-43.
• [46]Crocetti M, Dudas R, Krugman S: Parental beliefs and practices regarding early introduction of solid foods to their children. Clin Pediatr (Phila) 2004, ᅟ:541-547.
• [47]Birch LL, Fisher JO: Development of eating behaviors among children and adolescents. Pediatrics 1998, 101(3 Pt 2):539-49.
• [48]Birch LL, Davidson K: Family environmental factors influencing the developmental behavioral controls of food intake and childhood overweight. Pediatr Clin North Am 2001, 48:893-907.
• [49]Heinig MJ, Follett JR, Ishii KD, Kavanagh-Proshaska K, Cohen R, Panchula J: Barriers to compliance with infant-feeding recommendations among low-income women. J Hum Lact 2006, 22:27-38.
• [50]Ariza AJ, Greenburg RS, Unger R: Childhood overweight: management approaches in young children. Pediatr Ann 2004, 33:33-8.
• [51]Organization WH: Population-based prevention strategies for childhood obesity. World Health Organization, Geneva; 2009.
• [52]McCormick DP, Sarpong K, Jordan L, Ray LA, Jain S: Infant obesity: are we ready to make this diagnosis? J Pediatr 2010, 157:15-9.
• [53]Services UD of H and H: Strategic Plan for NIH Obesity Research: A Report of the NIH Obesity Task Force. Institutes of Health, Washington, DC; 2011.
• [54]Nutrition AA of PC on: Policy statement: prevention of pediatric overweight and obesity Pediatrics 2003, 112:30.
• [55]Fund TCH: Preventing pediatric diabetes: are racial disparities a factor? A children’s health fund briefing. 2004.
• [56]Organization WH: Quantifying selected major risks to health: The world health report 2002: reducing risks, promoting a healthy life. 2002.
• [57]Ciampa PJ, Kumar D, Barkin SL, Sanders LM, Yin HS, Perrin EM, et al.: Interventions aimed at decreasing obesity in children younger than 2 years: a systematic review. Arch Pediatr Adolesc Med 2010, 164:1098-104.
• [58]Paul IM, Savage JS, Anzman SL, Beiler JS, Marini ME, Stokes JL, et al.: Preventing obesity during infancy: a pilot study. Obesity 2011, 19:353-61.
• [59]Taveras EM, Blackburn K, Gillman MW, Haines J, McDonald J, Price S, et al.: First steps for mommy and me: a pilot intervention to improve nutrition and physical activity behaviors of postpartum mothers and their infants. Matern Child Health J 2011, 15:1217-27.
• [60]Wen LM, Baur LA, Simpson JM, Rissel C, Flood VM: Effectiveness of an early intervention on infant feeding practices and “tummy time”: a randomized controlled trial. Arch Pediatr Adolesc Med 2011, 165:701-7.
• [61]Dattilo AM, Birch L, Krebs N, Lake A, Taveras EM, Saavedra JM: Need for early interventions in the prevention of pediatric overweight: a review and upcoming directions. J Obes 2012, 2012:1-18.
• [62]Groner J, Skybo T, Murray-Johnson L, Schwirian P, Eneli I, Sternstein A, et al.: Anticipatory guidance for prevention of childhood obesity: design of the MOMS project. Clin Pediatr (Phila) 2009, 48:483-92.
• [63]Li R, Magadia J, Fein SB, Grummer-Strawn LM: Risk of bottle-feeding for rapid weight gain during the first year of life. Arch Pediatr Adolesc Med 2012, 166:431-6.
• [64]Horodynski MA, Olson B, Baker S, Brophy-Herb H, Auld G, Van Egeren L, et al.: Healthy babies through infant-centered feeding protocol: an intervention targeting early childhood obesity in vulnerable populations. BMC Public Health 2011, 11:868-74.
• [65]Campbell K, Kesketh K, Crawford D, Salmon J, Ball K, McCallum Z: The infant feeding activity and nutrition trial (INFANT) and early intervention to prevent childhood obesity: cluster-randomized controlled trial. BMC Public Health 2088, 8:103.
• [66]Daniels LA, Magarey A, Battistutta D, Nicholson JM, Farrell A, Davidson G, et al.: The NOURISH randomised control trial: positive feeding practices and food preferences in early childhood - a primary prevention program for childhood obesity. BMC Public Health 2009, 9:387.
• [67]Watt R, Tull K, Wiggins M, Kelly Y, Molloy B, Dowler E, et al.: Effectiveness of a social support intervention on infant feeding practices: randomised controlled trial. J Epidemiol Community Health 2008, 63:156-62.
• [68]Ahern DK, Phalen JM, Le LX, Goldman RE: Childhood obesity prevention and reduction: role of eHealth. Health e-Technologies Initiative, Boston, MA; 2007.
• [69]Hingle M, Nichter M, Medeiros M, Grace S: Texting for health: the use of participatory methods to develop healthy lifestyle messages for teens. J Nutr Educ Behav 2013, 45:12-9.
• [70]The infinite dial 2011- navigating digital platforms. [http://www.edisonresearch.com/the_infinite_dial_2011/].
• [71]Teens and mobile phones. [http://www.pewinternet.org/2012/03/19/teens-smartphones-texting/].
• [72]Review: teens, smartphones, and texting. [http://www.pewinternet.org/2012/03/19/teens-smartphones-texting/].
• [73]Dunham P, Hurshman A, Litwin E, Gusella J, Ellsworth C, Dodd P: Computer-mediated social support: single young mothers as a model system. Am J Community Psychol 1998, 26:281-306.
• [74]Wright KB, Bell SN: Health-related support groups on the internet: linking empirical findings to social support and computer-mediated communication theory. J Health Psychol 2003, 8:39-54.
• [75]Chou W, Hunt YM, Beckjord EB, Moser RP, Hesse BW: Social media use in the United States: implications for health communication. J Med Internet Res 2009, 11:e48.
• [76]Weinberg N, Schmale J, Uken J, Wessel K: Computer-mediated support groups. Soc Work Groups 1995, 17:43-55.
• [77]Melnyk B: The role of technology in enhancing evidence-based practice, education, healthcare quality, and patient outcomes: a call for randomized controlled trials and comparative effectiveness research. Worldviews Evid Based Nurs 2012, 9:63-5.
• [78]DiSantis K, Hodges E, Johnson S, Risher J: The role of responsive feeding in overweight during infancy and toddlerhood: a systematic review. Int J Obes 2011, 35:480-92.
• [79]Whitlock EP, O’Connor EA, Williams SB, Beil TL, Lutz KW: Effectiveness of weight management interventions in children: a targeted systematic review for the USPSTF. Pediatrics 2010, 125:e396-418.
• [80]Wamback KA, Aaronson L, Breedlove G, Domian EW, Rojjanasrirat W, Yeh H: A randomized controlled trial of breastfeeding support and education for adolescent mothers. West J Nurs Res 2011, 33:486-505.
• [81]Text4Baby. [http://www.text4baby.org].
• [82]Deci EL, Ryan RM: Intrinsic motivation. Plenum Press, New York, NY; 1985.
• [83]Bandura A: Social learning theory. 1st edition. Prentice Hall, Englewoods Cliffs, NJ; 1976.
• [84]Consolvo S, Everitt K, Smith I, Landay JA: Design requirements for technologies that encourage physical activity. In SIGCHI Conference on Human Factors in Computing Systems. ., New York, NY; 2006:457-466.
• [85]Swider SM: Outcome effectiveness of community health workers: an integrative literature review. Public Health Nurs 2002, 19:11-20.
• [86]Cricco-Lizza R: Infant-feeding beliefs and experiences of Black women enrolled in WIC in the New York metropolitan area. Qual Health Res 2004, 14:1997-1210.
• [87]Griffiths LJ, Smeeth L, Hawkins SS, Cole TJ, Dezateux C: Group MCSCH: Effects of infant feeding practice on weight gain from birth to 3 years. Arch Dis Child 2009, 94:577-82.
• [88]Ogden CL, Flegal KM: Changes in terminology for childhood overweight and obesity. Natl Health Stat Rep 2010, 25:1-5.
• [89]Sumner GA, Spietz A: NCAST caregiver/parent–child interaction feeding manual. NCAST Publications, Seattle, WA; 1995.
• [90]Alder EM, Williams FLR, Anderson AS, Forsyth S, Florey C du V, van der Velde P: What influences the timing of the introduction of solid foods to infants? Br J Nutr 2004, 92:527-31.
• [91]Bornstein MH, Tamis-Lemonda CS: Maternal responsiveness and infant mental abilities: specific predictive relations. Infant Behav Dev 1997, 20:283-96.
• [92]Bornstein MH, Tamis-Lemonda CS: Maternal responsiveness and cognitive development in children. New Dir Child Adolesc Dev 1989, 43:49-61.
• [93]Bowlby J: Attachment and loss. 1st edition. Basic Books, New York, NY; 1969.
• [94]Karl D: Maternal responsiveness of socially high-risk mothers to the elicitation cues of their 7-month-old infants. J Pediatr Nurs 1995, 10:254-63.
• [95]Pridham K, Steward D, Thoyre S, Brown R, Brown L: Feeding skill performance in premature infants during the first year. Early Hum Dev 2007, 83:293-305.
• [96]Landry SH, Smith KE, Swank PR, Assel MA, Vellet S: Does early responsive parenting have a special importance for children’s development or is consistency across early childhood necessary. Dev Psychol 2001, 37:387-403.
• [97]Patrick H, Nicklas TA, Hughes SO, Morales M: The benefits of authoritative feeding style: caregiver feeding styles and children’s food consumption patterns. Appetite 2005, 44:243-9.
• [98]Heinzer MM: Obesity in infancy: questions, more questions, and few answers. Newborn Infant Nurs Rev 2005, 5:194-202.
• [99]Hughes SO, Power TG, Orlet Fischer J, Mueller S, Nicklas TA: Revisiting a neglected construct: parenting styles in a child-feeding context. Appetite 2005, 44:83-92.
• [100]Hughes SO, Anderson CB, Power TG, Micheli N, Jaramillo S, Nicklas TA: Measuring feeding in low-income African-American and Hispanic parents. Appetite 2006, 46:215-23.
• [101]Hennessy E, Hughes SO, Goldberg JP, Hyatt RR, Economos CD: Permissive parental feeding behavior is associated with an increase in intake of low-nutrient-dense foods among American children living rural communities. J Acad Nutr Diet 2012, 112:142-8.
• [102]Savage JS, Fisher JO, Birch LL: Parental influence on eating behavior: conception to adolescence. J Law Med Ethics 2007, 35:22-34.
• [103]Pridham K, Schroeder M, Brown R, Clark R: The relationship of a mothers’ working model of feeding to her feeding behaviour. J Adv Nurs 2001, 35:741-50.
• [104]Lederman SA, Akabas SR, Moore BJ, Bentley ME, Devaney B, Gillman MW, et al.: Summary of the presentations at the conference on preventing childhood obesity, December 8, 2003. Pediatrics 2004, 114:1146-73.
• [105]Barnard KE, Bee HL, Hammond MA: Developmental changes in maternal interactions with term and preterm infants. Infant Behav Dev 1984, 7:101-13.
• [106]Blissett J, Farrow CV: Predictors of maternal control of feeding at 1 and 2 years of age. Int J Obes 2007, 31:1520-6.
• [107]Lissau I, Sørensen T: Parental neglect during childhood and increased risk of obesity in young adulthood. Lancet 1994, 343:324-47.
• [108]Moens E, Braet C, Soetens B: Observation of family functioning at mealtime: a comparison between families of children with and without overweight. J Pediatr Psychol 2007, 32:52-63.
• [109]Birch LL, Fisher JO: Mothers’ child-feeding practices influence daughters’ eating and weight. Am J Clin Nutr 2000, 71:1054-61.
• [110]Carper J, Orlet Fischer J, Birch LL: Young girls’ emerging dietary restraint and disinhibition are related to parental control in child feeding. Appetite 2000, 35:121-9.
• [111]Fomon SJ: Feeding normal infants: rationale for recommendations. J Am Diet Assoc 2001, 101:1002-5.
• [112]Mentro AM, Steward DK, Garvin BJ: Infant feeding responsiveness: a conceptual analysis. J Adv Nurs 2002, 37:208-16.
• [113]Barnard KE: NCAST II learner manual. NCAST Publications, Seattle, WA; 1990.
• [114]Booth CL, Lyons NB, Barnard KE: Synchrony in mother-infant interaction: a comparison of measurement methods. Child Study J 1984, 14:95-114.
• [115]Hodges EA, Hughes SO, Hopkinson JM: Maternal decisions about the initiation and termination of infant feeding. Appetite 2008, 50:333-9.
• [116]Korner AF, Chuck B, Dontchos S: Organismic determinants of spontaneous oral behavior in neonates. Child Dev 1968, 39:1145-57.
• [117]Crow RA: An ethological study of the development of infant feeding. J Adv Nurs 1976, 2:99-109.
• [118]Committee on Integrating the Science of Early Childhood Development, Youth and Families Board on Children, National Research Council: From neurons to neighborhoods: The science of early childhood development. National Academy Press, Washington, DC; 2000.
• [119]Clark R, Hyde JS, Essex MJ, Klein MH: Length of maternity leave and quality of mother-infant interactions. Child Dev 1997, 68:364-83.
• [120]Horodynski MA, Olson B, Brophy-Herb H, Shirer K, Arndt MJ, Silk K: Delaying the introduction of solid foods to infants: a six-lesson curriculum for community educators. J Nutr Educ Behav 2006, 38(Supplement 1):16-7.
• [121]Horodynski MA, Mills KJ. The voice of low-income adolescent mothers on infant feeding. J Ext. 2014;52: http://www.joe.org/joe/2014december/rb5.php.
• [122]Breckler SJ, Wiggins EC: Journal of experimental social psychology. J Exp Soc Psychol 1989, 25:253-71.
• [123]Ronis DL, Yates JF, Kirscht JP: Attitudes, decisions, and habits as determinants of repeated behavior. In Attitude structure and function Edited by Pratkanis AR, Breckler SJ, Greenwald AG. 1989, 213-39.
• [124]Rivis A, Sheeran P: Descriptive norms as an additional predictor in the theory of planned behaviour: a meta-analysis. Curr Psychol 2003, 22:218-33.
• [125]Maternal infant responsiveness instrument. [http://miriinstrument.wordpress.com/].
• [126]Amankwaa L, Pickler R: Measuring maternal responsiveness. ABNF J 2007, 18:4-15.
• [127]Amankwaa LC, Pickler RH, Boonmee J: Maternal responsiveness in mothers of preterm infants. Newborn Infant Nurs Rev 2007, 7:25-30.
• [128]Thompson AL, Medez MA, Borja JB, Adair LS, Zimmer CR, Bentley ME: Development and validation of the infant feeding style questionnaire. Appetite 2009, 53:210-21.
• [129]Golan M, Crow S: Parents are key players in the prevention and treatment of weight-related problems. Nutr Rev 2004, 62:39-50.
• [130]Faith MS, Scanlon KS, Birch LL, Francis LA, Sherry B: Parent–child feeding strategies and their relationships to child eating and weight status. Obes Res 2004, 12:1711-22.
• [131]Infant feeding practices study II and its year six follow-up. [http://www.cdc.gov/ifps/].
• [132]United States Department of Agriculture: Feeding infants: a guide for use in the child nutrition programs. Food and Nutrition Service, Alexandria, VA; 2001.
• [133]Briefel RR, Reidy K, Karwe V, Devaney B: Feeding infants and toddlers study: improvements needed in meeting infant feeding recommendations. J Am Diet Assoc 2004, 101(1 Suppl 1):s31-7.
• [134]Blum RE, Wei EK, Rockett HR, Langeliers JD, Leppert J, Gardner JD, et al.: Validation of a food frequency questionnaire in Native American and Caucasian children 1 to 5 years of age. Matern Child Health J 1999, 3:167-72.
• [135]Butte N, Cobb K, Dwyer J, Graney L, Heird W, Rickard K: American Dietetic Association, Gerber Products Company: The start healthy feeding guidelines for infants and toddlers. J Am Diet Assoc 2004, 104:4420454.
• [136]Skinner JD, Ziegler P, Ponza M: Transitions in infants’ and toddlers’ beverage patterns. J Am Diet Assoc 2004, 104(1 Suppl 1):s45-50.
• [137]Carruth BR, Zeigler PJ, Gordon A, Barr SI: Prevalence of picky eaters among infants and toddlers and their caregivers’ decisions about offering a new food. J Am Diet Assoc 2004, 104(1 Suppl 1):s57-64.
• [138]Measuring children’s height and weight accurately at home. [http://www.cdc.gov/healthyweight/assessing/bmi/childrens_bmi/measuring_children.html].
• [139]Expanded Food and Nutrition Education Program. [http://www.csrees.usda.gov/nea/food/efnep/efnep.html].
• [140]WHO anthro for personal computers version 3.1.2010: software for assessing growth and development of the world’s children. [http://www.who.int/childgrowth/software/anthro_pc_manual.pdf].
• [141]Kumanyika S: Environmental influences on childhood obesity: ethnic and cultural influences in context. Physiol Behav 2008, 22:61-70.
• [142]Sameroff AJ, Fiese BH: Zeanah, Charles H J: Models of development and development risk. In Handbook of infant mental health. 2nd edition. Guildford Press, New York, NY; 2000:3-13.
• [143]Vukelich C, Kliman DS: Mature teenage mothers’ infant growth expectations and use of child development information sources. Fam Relat 1985, 34:189-96.
• [144]Teti DM, Gelfand DM: Behavioral competence among mothers and infants in the first year: the mediational role of maternal self-efficacy. Child Dev 1991, 65:918-29.
• [145]Clarke-Steward KA, Fitzpatrick M, Allhusen V, Goldberg W: Measuring difficult temperament the easy way. J Dev Behav Pediatr 2000, 21:207-20.
• [146]Worobey J, Islas-Lopez M, Hoffman DJ: Predictors of infant feeding frequency by Mexican immigrant mothers. Clin Nutr 2008, 33:333-9.
• [147]Liu H, Wu T: Sample size calculation and power analysis of changes in mean response over time. Commun Stat Simul Comput 2008, 37:1785-1798.
• [148]Julious SA: Sample size of 12 per group rule of thumb for a pilot study. Pharm Stat 2005, 4:287-91.
• [149]Zar JH: Biostatistical analysis. 2nd edition. Englewoods Cliffs, NJ, Prentice Hall; 1984.
• [150]Porter AC, Raudenbach SW: Analysis of covariance: its model and use in psychological research. J Couns Psychol 1987, 34:383-92.
• [151]Vasey MW, Thayer JF: The continuing problem of false positives in repeated measures ANOVA in psychophysiology: a multivariate solution. Psychophysiology 1987, 24:479-86.
• [152]Sackett DL, Richardson SW, Rosenburg W, Haynes RBH: Evidence-based medicine. Churchill Livingstone, New York, NY; 1996.
• [153]Little R, Yau L: Intent-to-treat analysis for longitudinal studies with drop-outs. Biometrics 1996, 52:1324-33.
• [154]Liang K-Y, Zeger SL: Longitudinal data analysis using generalized linear models. Biometrika 1986, 73:13-22.
• [155]Brown H, Prescott R: Applied mixed models in medicine. 2nd edition. John Wiley & Sons Ltd, West Sussex, England; 2006.
• [156]McLean RA, Sanders WL, Stroup WW: A unified approach to mixed linear models. Am Stat 1991, 45:54-64.