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. 2018 Jul 27;18:126. doi: 10.1186/s12903-018-0589-0

Table 2.

Socio-demographic distribution at baseline for intervention and control group (N = 478)

Variable Overall Intervention Control p-value
N (%) n (%) n (%)
Gender of child:
 Male 215(45.0) 103 (44.2) 112 (45.7) 0.740a
 Female 263(55.0) 130 (55.8) 132 (53.9)
Age of child:
 2 years 240 (50.2) 118 (50.6) 122 (49.8) 0.853a
 3 years 238 (49.8) 115 (49.4) 123 (50.2)
Mean age of child* 2.5 ± 0.5 2.5 ± 0.5 2.5 ± 0.5 0.853b
Ethnicity of child:
 Malay 432 (90.4) 206 (88.4) 226 (92.2) 0.156a
 Chinese 46 (9.6) 27 (10.6) 19 (7.8)
Gender of older sibling:
 Male 237 (49.6) 111 (47.6) 126 (51.4) 0.408a
 Female 241 (50.4) 122 (52.4) 119 (48.6)
Age of older sibling:
 4 years 117 (24.5) 53 (22.7) 64 (26.1) 0.506a
 5 years 155 (32.4) 81 (34.8) 74 (30.2)
 6 years 206 (43.1) 99 (42.5) 107 (43.7)
Mean age of older sibling* 5.2 ± 0.8 5.2 ± 0.7 5.2 ± 0.8 0.765b
Mother’s highest education:
 Never been to school 13 (2.7) 5 (2.2) 8 (3.3) 0.222a
 Primary school 43 (9.0) 19 (8.2) 24 (9.8)
 Secondary school 295 (61.7) 138 (59.2) 157 (64.1)
 Diploma, degree and above 127 (26.6) 71 (30.5) 56 (22.8)

aChi-square test; bIndependent t-test; significance level p < 0.05 *Mean and standard deviation