Table 2.
Crude age-prevalence of elevated alanine aminotransferase (ALT) stratified by gender among the adolescents of Shenzhen, China, 2017–2018, separately based on the diagnostic criteria I and II.
| Age (years) | Criterion I† | Criterion II‡ | ||||||
|---|---|---|---|---|---|---|---|---|
| Overall | Boys | Girls | P value∗ | Overall | Boys | Girls | P value∗ | |
| 10–17 | 7.11 (6.52-7.7) | 6.88 (6.09-7.66) | 7.41 (6.51-8.31) | 0.380 | 2.72 (2.35-3.09) | 3.96 (3.36-4.56) | 1.19 (0.82-1.57) | <0.001 |
| 10–11 | 3.60 (2.46-4.74) | 2.87 (1.44-4.30) | 4.37 (2.58-6.15) | 0.198 | 0.78 (0.24-1.32) | 1.53 (0.48-2.58) | 0 (0-0) | 0.005 |
| 12 | 4.37 (3.34-5.40) | 4.00 (2.72-5.29) | 4.90 (3.19-6.61) | 0.402 | 1.79 (1.12-2.45) | 2.22 (1.26-3.19) | 1.14 (0.30-1.99) | 0.119 |
| 13 | 7.01 (4.70-9.31) | 2.97 (0.94-5.00) | 12.38 (7.83-16.92) | <0.001 | 2.76 (1.28-4.24) | 1.49 (0.04-2.93) | 4.46 (1.61-7.30) | 0.052 |
| 14 | 7.54 (5.98-9.10) | 8.24 (5.94-10.55) | 6.85 (4.75-8.95) | 0.381 | 3.00 (1.99-4.00) | 4.76 (2.98-6.55) | 1.26 (0.33-2.19) | 0.001 |
| 15 | 8.66 (7.36-9.97) | 8.95 (7.19-10.70) | 8.29 (6.35-10.24) | 0.624 | 3.41 (2.57-4.25) | 5.01 (3.67-6.36) | 1.30 (0.50-2.09) | <0.001 |
| 16 | 10.39 (8.61-12.16) | 10.58 (8.16-12.99) | 10.16 (7.54-12.77) | 0.817 | 4.05 (2.90-5.20) | 6.57 (4.63-8.51) | 0.98 (0.12-1.83) | <0.001 |
| 17 | 10.57 (6.73-14.41) | 11.03 (5.76-16.29) | 10.00 (4.39-15.61) | 0.794 | 4.07 (1.60-6.53) | 6.62 (2.44-10.8) | 0.91 (0-2.68) | 0.024 |
The prevalence of elevated ALT is expressed as % (95% confidence interval). †Diagnostic criterion I: >30 U/L for boys and >19 U/L for girls. ‡Diagnostic criterion II: >40 U/L for boys and girls. ∗P < 0.001 comparing girls with boys by Pearson's chi-square test.