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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Arch Dis Child Fetal Neonatal Ed. 2015 Dec 1;101(5):F433–F438. doi: 10.1136/archdischild-2015-309427

Figure 1.

Figure 1

Mean Bayley development scores by birthweight categories. T-scores for motor (A and C) and mental (B and D) development at 9 months and 2 years are adjusted for sex, race/ethnicity, socio-economic status and gestational age. The population mean for these scores is set to 50 with a SD of 10. Comparison to group weighing <750 g: *p<0.05; **p<0.01; ***p<0.001. Comparison to group weighing 750–1000 g: ##p<0.01; ###p<0.001. Comparison to group weighing 100–1250 g: ΦΦ p<0.01.