Table 1. Descriptive statistics of categorical variables by presence of suicidal ideation in study population.
| Variables | Suicidal ideation | No suicidal ideation | x 2 test | |
|---|---|---|---|---|
| N | N (%) | N (%) | ||
| Gender | ||||
| Male | 3191 | 413 (12.94) | 2778 (87.06) | 59.53** |
| Female | 2781 | 566 (20.35) | 2215 (79.65) | |
| Number of close friends in the school | ||||
| 10 or above | 575 | 55 (9.57) | 520 (90.43) | 126.83** |
| 5~10 | 1022 | 123 (12.04) | 899 (87.96) | |
| 3~5 | 2774 | 425 (15.32) | 2349 (84.68) | |
| 1~2 | 1466 | 321 (21.90) | 1145 (78.10) | |
| 0 | 135 | 55 (40.74) | 80 (59.26) | |
| Number of engaged group activities | ||||
| 3 or above | 593 | 85 (14.33) | 508 (85.67) | 16.06** |
| 2 | 1706 | 270 (15.83) | 1436 (84.17) | |
| 1 | 2135 | 323 (15.13) | 1812 (84.87) | |
| 0 | 1538 | 301 (19.57) | 1237 (80.43) | |
| Status of dating relationship | ||||
| In dating relation | 979 | 247 (14.25) | 1468 (85.75) | 8.16** |
| No dating relation | 4993 | 732 (17.27) | 3507 (82.73) | |
| Only child in the family | ||||
| No | 3732 | 610 (16.35) | 3122 (83.65) | 0.02 |
| Yes | 2240 | 369 (16.47) | 1871 (83.53) | |
**p<0.01.