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. 2011 Jun 26;8:67. doi: 10.1186/1479-5868-8-67

Table 1.

Participant characteristics

Characteristic Total sample
(n = 47)
Observed sample
(n = 31)
t or chi square value p-value
Age (months) 20 ± 4 20 ± 4 t = -0.353 0.73

Age distribution (%) χ2 = 0.368 0.83
12-17 months 34.0 35.5
18-23 months 41.1 45.2
24-30 months 14.9 19.3

Male (%) 53.2 54.8 χ2 = 0.02 0.89

Height (cm) 79.5 ± 5.0 79.0 ± 5.0 t = 0.442 0.66

Body mass (kg) 11.2 ± 1.4 11.2 ± 1.5 t = -0.152 0.88

BMI (kg/m2) 17.7 ± 1.5 18.0 ± 1.4 t = -0.805 0.42

BMI z-score 1.2 ± 1.0 1.4 ± 0.9 t = -0.850 0.40