Table 3.
Correlates of children's weight underestimation stratified by actual weight status.
| Normal-weight children (n = 2251)a |
Overweight children (n = 790) |
|||
|---|---|---|---|---|
| Crude OR | Adjusted ORb | Crude OR | Adjusted ORb | |
| Age, years | 0.91 (0.84–0.97)∗∗ | 0.83 (0.75–0.91)∗∗ | 0.66 (0.57–0.77)∗∗ | 0.59 (0.49–0.71)∗∗ |
| Gender [reference: boys] | ||||
| Girls | 0.59 (0.50–0.71)∗∗ | 0.51 (0.41–0.63)∗∗ | 0.82 (0.58–1.16) | 0.79 (0.52–1.20) |
| Number of siblings [reference: 0] | ||||
| 1 | 1.18 (0.95–1.46) | 1.09 (0.83–1.44) | 0.76 (0.49–1.17) | 0.66 (0.38–1.14) |
| ≥2 | 1.07 (0.68–1.69) | 1.38 (0.75–2.54) | 2.16 (1.00–4.66) | 3.50 (1.19–10.29)∗ |
| Paternal educational level [reference: college or above] | ||||
| Junior high school or below | 1.25 (0.93–1.69) | 1.12 (0.57–1.84) | 0.66 (0.36–1.22) | 0.60 (0.22–1.60) |
| Senior high school | 1.14 (0.92–1.43) | 1.09 (0.75–1.57) | 0.85 (0.56–1.29) | 0.85 (0.44–1.63) |
| Junior college | 1.03 (0.82–1.29) | 0.96 (0.70–1.32) | 1.17 (0.78–1.76) | 1.05 (0.60–1.84) |
| Maternal educational level [reference: college or above] | ||||
| Junior high school or below | 1.17 (0.87–1.56) | 0.98 (0.60–1.62) | 0.69 (0.39–1.20) | 0.68 (0.26–1.79) |
| Senior high school | 1.12 (0.89–1.39) | 1.11 (0.76–1.63) | 1.08 (0.72–1.63) | 1.28 (0.66–2.49) |
| Junior college | 1.08 (0.86–1.35) | 1.01 (0.74–1.37) | 0.95 (0.62–1.44) | 0.81 (0.47–1.41) |
| Monthly household income [reference: <8000 RMB] | ||||
| 8000–14,999 RMB | 1.07 (0.82–1.39) | 1.20 (0.87–1.67) | 0.93 (0.57–1.52) | 0.71 (0.39–1.29) |
| ≥15,000 RMB | 1.01 (0.77–1.32) | 1.04 (0.73–1.48) | 0.88 (0.52–1.50) | 0.70 (0.36–1.36) |
| Refuse to answer | 0.97 (0.77–1.23) | 1.01 (0.75–1.35) | 1.01 (0.66–1.55) | 0.87 (0.51–1.48) |
| Paternal weight status [reference: normal weight] | ||||
| Overweight | 0.81 (0.67–0.97)∗ | 1.04 (0.83–1.31) | 0.81 (0.57–1.15) | 0.92 (0.60–1.40) |
| Obese | 0.93 (0.66–1.31) | 1.17 (0.76–1.79) | 0.47 (0.28–0.80)∗∗ | 0.51 (0.27–0.96)∗ |
| Maternal weight status [reference: normal weight] | ||||
| Overweight | 0.78 (0.59–1.05) | 1.09 (0.77–1.56) | 0.67 (0.43–1.05) | 0.95 (0.56–1.61) |
| Obese | 0.72 (0.35–1.47) | 1.29 (0.54–3.05) | 0.16 (0.04–0.68)∗ | 0.17 (0.04–0.77)∗ |
| Child BMI z-score | 0.28 (0.24–0.31)∗∗ | 0.26 (0.22–0.30)∗∗ | 0.35 (0.27–0.45)∗∗ | 0.30 (0.22–0.41)∗∗ |
BMI, body mass index; OR, odds ratio.
Values are represented as odds ratios (95% confidence intervals) derived from binary logistic regression analyses.
∗P < 0.05, ∗∗P < 0.01.
a
Among the normal-weight children, the under-estimators were compared with the accurate estimators. And those who overestimated their weight status were excluded from the analysis (n = 164, 6.8% of normal-weight children).
b
All correlates were adjusted for each other and parental occupations.