Table 5.
Association between anemia and its risk factors in multivariate models.
| Variables | Total | Boys | Girls | |||
|---|---|---|---|---|---|---|
| OR (95% CI) | p value | OR (95% CI) | p value | OR (95% CI) | p-value | |
| Age | ||||||
| 9 | Reference | |||||
| 12 | 1.39(1.16,1.66) | <0.001 | 0.56(0.18,1.73) | 0.313 | 2.06(1.66,2.56) | <0.001 |
| 14 | 1.06(0.87,1.30) | 0.544 | 0.27(0.08,0.83) | 0.022 | 2.57(2.01,3.28) | <0.001 |
| Nutritional status | ||||||
| Normal weight | Reference | |||||
| Thinness | 0.98(0.81,1.19) | 0.846 | 1.25(0.90,1.74) | 0.179 | 0.91(0.71,1.17) | 0.471 |
| Overweight | 0.84(0.75,0.94) | 0.001 | 0.83(0.70,0.97) | 0.022 | 0.95(0.83,1.08) | 0.445 |
| Obesity | 0.65(0.53,0.79) | <0.001 | 0.61(0.44,0.86) | 0.005 | 0.85(0.72,0.97) | 0.013 |
| Sleep duration | ||||||
| Not Enough | Reference | |||||
| Enough | 1.05(0.96,1.15) | 0.312 | 1.20(0.98,1.43) | 0.201 | 1.06(0.94,1.19) | 0.333 |
| Eating eggs every day | ||||||
| No | Reference | |||||
| Yes | 0.89(0.79,0.98) | 0.042 | 1.08(0.85,1.37) | 0.537 | 0.84(0.72,0.97) | 0.016 |
| Having milk every day | ||||||
| No | Reference | |||||
| Yes | 0.90(0.82,0.97) | 0.010 | 0.83(0.70,0.98) | 0.031 | 0.96(0.86,1.06) | 0.427 |
| Having breakfast every day | ||||||
| No | Reference | |||||
| Yes | 0.96(0.88,1.06) | 0.432 | 0.88(0.78,0.99) | 0.046 | 0.96(0.86,1.07) | 0.415 |
| Spermarche/menarche | ||||||
| No | Reference | |||||
| Yes | 1.60(1.45,1.77) | <0.001 | 0.79(0.64,0.97) | 0.003 | 1.14(0.99,1.31) | 0.077 |
Notes: 95% confidence interval and p-value were generated from the multivariable mixed-effects logistic regression model. Abbreviations: OR = odds ratio, CI = confidence interval.