Table 1

Comparisons of anthropometric indices in non-disabled and disabled singleton cases and their matched controls and disabled singleton cases attending special schools (who have no controls)

Anthropometric measuresNon-disabled singleton cases (n=128)Matched controls (n=128)Mean of differences between cases and controls (95% CI)Disabled singleton cases (n=11)Matched controls (n=11)Mean of differences between cases and controls (95% CI)Disabled cases with no controls (n=23)
Height (cm)159.7 (SD 7.9)163.7 (SD 7.8)−4.0 (−2.1 to −5.9)
p < 0.001
153.8 (SD 5.8)162.4 (SD 6.8)−8.6 (−2.3 to −14.9)
p < 0.02
151.5 (SD 9.0)
Weight (kg)50.8 (SD 10.7)55.3 (SD 10.5)−4.4 (−1.8 to −7.0) p=0.00147.8 (SD 9.8)56.3 (SD 9.3)−8.5 (−0.8 to −16.2) p<0.0543.7 (SD 10.1)
Body mass index19.8 (SD 3.3)20.6 (SD 3.2)−0.7 (−1.5 to +0.1) 0.1>p>0.0520.3 (SD 4.5)21.2 (SD 2.6)−1.0 (−3.5 to +1.5)
not significant
19.0 (SD 4.0)
Head circumference (cm)55.1 (SD 1.9)56.7 (SD 1.6)−1.5 (−1.1 to −1.9) p<0.00153.5 (SD 2.0)56.2 (SD 2.1)−2.8 (−0.9 to −4.7) p<0.0153.9 (SD 1.6)