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Table 1 Sample characteristics (n = 91)

From: Relative validity of a semi-quantitative food frequency questionnaire for Singaporean toddlers aged 15–36 months

  Median (P25, P75) n (%)
Child
 Age (months) 20.0 (16.0, 28.0)  
 Current height (cm)‡ 83.0 (78.0, 88.0)  
 Current weight (kg) 11.5 (10.0, 13.0)  
 Child BMI (kg/m2) 16.5 (15.5, 18.2)  
 Weight for age Z-score (WAZ) −0.100 (−0.760, 0.770)  
 Weight for height Z-score (WHZ)a 0.49 (−0.24, 1.42)  
 Height for age Z-score (HAZ)a −0.78 (−1.55, 0.43)  
 BMI for age Z-score BAZa 0.40 (−0.34, 1.55)  
 Child birthweight (g)b 3066 (2793, 3444)  
 Child birth length (cm)b 50.0 (48.0, 52.0)  
 Males   50 (54.9)
 Females   41 (45.1)
 Chinese   63 (69.2)
 Malay   16 (17.6)
 Indian   12 (13.2)
Parent
 Mother BMI (kg/m2) 22.9 (20.2, 25.7)  
 Father BMI (kg/m2) 25.4 (23.8, 28.1)  
Parental Education Level (father, mother)
 O levelsc   8 (8.8), 7 (7.7)
 A Level/Junior Colleged   3 (3.3), 3 (3.3)
 Polytechnic   20 (22.0), 17 (18.7)
 Bachelor’s degree   44 (48.4), 52 (57.1)
 Postgraduate   15 (16.5), 11 (12.1)
 Other   1 (1.1), 1 (1.1)
Total monthly household income in SGD (%)
  < $7000   35 (38.5)
 $7000–$15,000   48 (52.7)
  > $15,000   8 (8.8)
  1. P25, 25th percentile; P75, 75th percentile; WAZ, weight-for-age z-score; WHZ, weight-for-height z-score; HAZ, height-for-age z-score; BAZ, BMI-for-age z-score
  2. an = 89
  3. bn = 88
  4. cGeneral Certificate of Education Ordinary Level; signifies successful completion of secondary school
  5. dGeneral Certificate of Education Advanced Level, signifies main school leaving qualification and eligibility to apply for university entry