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Table 1 Distribution of children according to socio-demographic background (n = 402)

From: High prevalence of vitamin D insufficiency and its association with BMI-for-age among primary school children in Kuala Lumpur, Malaysia

  N (%) Mean ± SD
   Boys 180 (44.8)  
   Girls 222 (55.2)  
Age (boys & girls)   
   7-12 years 402 (100) 9.9 ± 1.2
   7-9 years 194 (48.3) 9.0 ± 0.9
   10-12 years 208 (51.7) 10.9 ± 0.6
Ethnicity   
   Malay 206 (51.2)  
   Chinese 172 (42.8)  
   Indian & others 24 (6.0)  
Number of siblings (n = 401)   3.6 ± 1.6
   ≤3 221 (55.1)  
   ≥4 180 (44.9)  
Father's age (years) (n = 388)   43.0 ± 6.2
   ≤ 40 139 (35.9)  
   > 40 249 (64.1)  
Mother's age (years) (n = 393)   39.6 ± 5.6
   ≤ 40 226 (57.5)  
   > 40 167 (42.5)  
Father's educational attainment (n = 387)   
   Secondary school and below 270 (69.8)  
   College/University 117 (30.2)  
Mother's educational attainment (n = 389)   
   Secondary school and below 290 (74.6)  
   College/University 99 (25.4)  
Monthly household income (n = 391) (US$1.00 = RM3.00)   
   < RM3999 245 (62.7)  
   RM4000 - RM7999 92 (23.5)  
   ≥ RM8000 54 (13.8)