Neurodevelopmental outcome of extremely low birth weight infants at 24 months corrected age: a comparison between Griffiths and Bayley Scales

BMC Pediatrics

Fabio Mosca¹  Monica Fumagalli¹  Gisella Presezzi¹  Laura Gardon¹  Silvana Gangi¹  Ivan Cortinovis²  Maria Lorella Giannì¹  Camilla Fontana¹  Chiara Squarza¹  Odoardo Picciolini¹ 

[1] NICU, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Via Della Commenda 12, Milan 20122, Italy;Department of Clinical Sciences and Community Health-Laboratory of Medical Statistics, Biometry and Epidemiology, Università degli Studi di Milano, Via Della Commenda 12, Milan 20122, Italy

关键词: Extremely low birth weight infants;    Developmental assessment;    Griffiths;    Bayley-III;    Bayley-II;   

Others  :  1232680
DOI  :  10.1186/s12887-015-0457-x

 received in 2015-06-25, accepted in 2015-09-15,  发布年份 2015

【 摘 要 】

Background

The availability of accurate assessment tools for the early detection of infants at risk for adverse neurodevelopmental outcomes is a major issue. The purpose of this study is to compare the outcomes of the Bayley Scales (Bayley-II vs Bayley-III) in a cohort of extremely low birth weight infants at 24 months corrected age, to define which edition shows the highest agreement with the Griffiths Mental Development Scales Revised.

Methods

We performed a single-centre cohort study. We prospectively enrolled infants with a birth weight of 401–1000 g and/or gestational age < 28 weeks. Exclusion criteria were the presence of neurosensory disabilities and/or genetic abnormalities. Infants underwent neurodevelopmental evaluation at 24 months corrected age using the Griffiths and either the Bayley-II (birth years 2003–2006) or the Bayley-III (birth years 2007–2010).

Results

A total of 194 infants were enrolled. Concordance was excellent between the Griffiths and the Bayley-III composite scores for both cognitive language and motor abilities (weighted K = 0.80 and 0.81, respectively) but poorer for the Bayley-II (weighted K = 0.63 and 0.50, respectively). The Youden’s Index revealed higher values for the Bayley-III than for the Bayley-II (75.9 vs 69.6 %). Compared with the Griffiths, the Bayley-III found 3 % fewer infants as being severely impaired in cognitive-language abilities and 7.8 % fewer infants as being mildly impaired in motor skills while the Bayley-II showed, compared with the Griffiths, higher rates of severely impaired children both for cognitive-language and motor abilities (14.1 and 15.3 % more infants respectively).

Discussion

Our study suggests that the Bayley-III, although having a higher agreement with the Griffiths compared to the Bayley-II, slightly tends to underestimate neurodevelopmental impairment compared with the Griffiths, whereas the Bayley-II tends to overestimate it.

Conclusions

On the basis of these findings, we recommend the use of multiple measures to assess neurodevelopmental outcomes of extremely low birth weight infants at 24 months.

【 授权许可】

   
2015 Picciolini et al.

【 图 表 】

Fig. 1.

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