Table 2. Frequency of common mental disorders (CMD) at baseline and follow-up according to population characteristics.
| Variables | Common mental disorders | |||
|---|---|---|---|---|
| Baseline (%) | Follow-up (%) | |||
| n = 834 (33.2) | n = 742 (32.2) | |||
| Sex | p value+ | p value+ | ||
| Boys | 486 (36.9) | <0.001 | 418 (35.1) | 0.002 |
| Girls | 348 (29.2) | 324 (29.0) | ||
| Age groups (years) | p value+ | p value+ | ||
| 9 to 11 | 447 (31.7) | 0.06 | 380 (30.2) | 0.017 |
| 12 to 17 | 387 (35.2) | 295 (35.2) | ||
| Socioeconomic Position | p value* | p value* | ||
| 1° quintile (lower) | 141 (27.9) | <0.001 | 104 (24.4) | <0.001 |
| 2° quintile | 143 (28.7) | 118 (28.9) | ||
| 3° quintile | 156 (30.5) | 133 (31.4) | ||
| 4° quintile | 158 (32.1) | 129 (31.5) | ||
| 5° quintile (higher) | 235 (46.9) | 185 (45.0) | ||
| Frequency of Family meals (Breakfast / Dinner) | p value++ | p value++ | ||
| Two meals (%) | 374 (29.4) | <0.001 | 310 (29.1) | <0.001 |
| One meal (%) | 193 (32.2) | <0.001 | 167 (32.9) | 0.082 |
| None (%) | 267 (41.8) | Ref | 195 (38.1) | Ref |
+p value of chi-square test
*p trend of linear regression test
++Chi-square test between “all meals and no meal” and “at least one meal and no meal,” and common mental disorders.