Table 3.
Univariate and multivariate logistic regression analyses with elevated alanine aminotransferase (ALT) as the outcome variable, based on the diagnostic criterion I (>30 U/L for boys and >19 U/L for girls).
| Variable | Univariate analysis | Multivariate analysisa | ||||
|---|---|---|---|---|---|---|
| Wald test | OR (95% CI) | P | Wald test | OR (95% CI) | P | |
| Girls (vs. boys) | 0.770 | 1.08 (0.91-1.30) | 0.380 | 23.587 | 1.65 (1.35-2.03) | <0.001 |
| Age (years) | 62.625 | <0.001 | 34.547 | <0.001 | ||
| 10–11 | 1.00 | 1.00 | ||||
| 12 | 0.917 | 1.22 (0.81-1.84) | 0.338 | 1.295 | 1.29 (0.83-2.01) | 0.255 |
| 13 | 8.108 | 2.02 (1.24-3.27) | 0.004 | 7.431 | 2.06 (1.23-3.47) | 0.006 |
| 14 | 14.816 | 2.18 (1.47-3.25) | <0.001 | 5.601 | 1.68 (1.09-2.59) | 0.018 |
| 15 | 24.716 | 2.54 (1.76-3.66) | <0.001 | 12.089 | 2.03 (1.36-3.02) | 0.001 |
| 16 | 34.169 | 3.10 (2.12-4.53) | <0.001 | 19.535 | 2.53 (1.67-3.83) | <0.001 |
| 17 | 18.656 | 3.16 (1.88-5.33) | <0.001 | 15.973 | 3.17 (1.80-5.58) | <0.001 |
| Constant | — | — | — | 667.963 | — | <0.001 |
Boys or 10–11 years as the reference group; OR (95% CI): odds ratio (95% confidence interval). aAdjusted for gender, age, and body mass index using a multivariable logistic regression analysis.