1Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea.
2Health Services Research Institute, Yonsei University College of Medicine, Seoul, Korea.
Copyright © 2013 The Korean Society for Preventive Medicine
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Men (n = 29 492) |
Women (n = 28 365) |
|||
---|---|---|---|---|
SI1 | SA2 | SI1 | SA2 | |
Total | 4379 (14.8) | 865 (2.9) | 6515 (23.0) | 1572 (5.5) |
Grade | * | ‡ | ‡ | * |
7 | 638 (14.4) | 147 (3.3) | 1018 (25.5) | 319 (8.0) |
8 | 697 (14.7) | 137 (2.9) | 1043 (23.6) | 284 (6.4) |
9 | 788 (15.2) | 159 (3.1) | 1051 (22.6) | 264 (5.7) |
10 | 766 (13.8) | 146 (2.6) | 1061 (22.9) | 268 (5.8) |
11 | 755 (15.3) | 143 (2.9) | 1188 (22.1) | 238 (4.4) |
12 | 735 (15.6) | 133 (2.8) | 1154 (21.9) | 199 (3.8) |
Academic record | * | * | * | * |
High | 1508 (12.9) | 259 (2.2) | 2017 (19.4) | 426 (4.1) |
Middle | 1145 (14.2) | 223 (2.8) | 1660 (21.0) | 361 (4.6) |
Low | 1726 (17.7) | 383 (3.9) | 2838 (28.1) | 785 (7.8) |
Economic conditions | * | ‡ | * | * |
High | 1312 (13.4) | 269 (2.8) | 1540 (21.1) | 419 (5.8) |
Middle | 1843 (13.7) | 327 (2.4) | 2922 (20.2) | 627 (4.3) |
Low | 1224 (19.5) | 269 (4.3) | 2053 (31.0) | 526 (7.9) |
Disease3 | * | * | * | ‡ |
Yes | 1787 (17.3) | 362 (3.5) | 2868 (26.9) | 763 (7.2) |
No | 2592 (13.5) | 503 (2.6) | 3647 (20.6) | 809 (4.6) |
Father’s education | * | * | * | * |
Middle school grad4 | 378 (16.7) | 77 (3.4) | 607 (27.6) | 161 (7.3) |
High school grad | 1813 (14.1) | 382 (3.0) | 2985 (23.0) | 710 (5.5) |
College grad/higher | 2188 (15.2) | 406 (2.8) | 2923 (22.2) | 701 (5.3) |
Mother’s education | * | * | * | * |
Middle school grad4 | 362 (16.5) | 88 (4.0) | 604 (27.1) | 139 (6.2) |
High school grad | 2332 (14.1) | 448 (2.7) | 3836 (22.6) | 920 (5.4) |
College grad/higher | 1685 (15.7) | 329 (3.1) | 2075 (22.6) | 513 (5.6) |
Self-rated health | * | * | * | * |
Healthy | 2550 (12.3) | 467 (2.3) | 3135 (18.4) | 708 (4.1) |
Neither healthy nor unhealthy | 1287 (18.7) | 262 (3.8) | 2289 (26.7) | 535 (6.2) |
Unhealthy | 542 (28.1) | 136 (7.1) | 1091 (40.1) | 329 (12.1) |
Drinking5 | * | * | * | * |
No | 1485 (12.3) | 249 (2.1) | 2137 (17.1) | 447 (3.6) |
Yes | 2894 (16.7) | 616 (3.5) | 4378 (27.6) | 1125 (7.1) |
Smoking5 | * | ‡ | * | * |
No | 2427 (12.5) | 400 (2.1) | 4506 (19.6) | 941 (4.1) |
Yes | 1952 (19.4) | 465 (4.6) | 2009 (37.2) | 631 (11.7) |
Drug consumption5 | * | * | * | * |
No | 4245 (14.6) | 802 (2.8) | 6395 (22.7) | 1504 (5.3) |
Yes | 134 (31.6) | 63 (14.9) | 120 (54.1) | 68 (30.6) |
Physical activity6 | * | * | * | * |
0 | 938 (16.5) | 181 (3.2) | 2408 (22.9) | 545 (5.2) |
1-2 | 1776 (14.2) | 333 (2.7) | 2712 (22.4) | 634 (5.2) |
3-4 | 993 (14.6) | 197 (2.9) | 971 (23.9) | 275 (6.8) |
≥5 | 672 (14.8) | 154 (3.4) | 424 (25.1) | 118 (7.0) |
Leisure7 | * | * | * | * |
0-1 | 1138 (14.4) | 207 (2.6) | 1605 (21.0) | 353 (4.6) |
1-2 | 1224 (13.7) | 217 (2.4) | 1719 (20.9) | 381 (4.6) |
2-3 | 930 (14.6) | 205 (3.2) | 1362 (23.1) | 353 (6.0) |
3-4 | 436 (15.2) | 84 (2.9) | 765 (26.5) | 190 (6.6) |
≥4 | 651 (19.1) | 152 (4.5) | 1064 (28.5) | 295 (7.9) |
Sleep duration8 | * | * | * | * |
0-4 | 290 (26.3) | 94 (8.5) | 380 (32.9) | 119 (10.3) |
4-5 | 705 (18.7) | 122 (3.2) | 1372 (28.0) | 313 (6.4) |
5-6 | 1082 (15.5) | 198 (2.8) | 1669 (22.3) | 381 (5.1) |
6-7 | 1238 (13.8) | 240 (2.7) | 1804 (21.6) | 440 (5.3) |
7-8 | 792 (12.4) | 152 (2.4) | 929 (19.5) | 234 (4.9) |
≥8 | 272 (11.9) | 59 (2.6) | 361 (21.2) | 85 (5.0) |
Depressed mood9 | * | * | * | * |
No | 967 (4.8) | 134 (0.7) | 1274 (8.0) | 186 (1.2) |
Yes | 3412 (35.8) | 731 (7.7) | 5241 (42.1) | 1386 (11.1) |
Values are presented as number (%).
SI, suicidal ideation; SA, suicidal attempt.
1 Having ever seriously thought about committing suicide in the past 12 months.
2 Having ever attempted suicide in the past 12 months.
3 Having ever been diagnosed as asthma, rhinitis and/or atopic dermatitis.
4 Middle school graduation or lower (grad: graduated).
5 Having ever had at least a cup of alcohol/at least a cigarette/any drug.
6 Days of physical activity for at least 30 minutes with a little shortness of breath in the past week.
7 Hours of sitting and watching TV, playing a game, surfing the internet, having chat, etc., per weekday in the past week.
8 Hours of sleep per weekday in the past week.
9 Having ever had in the past 12 months, a sense of sadness or hopelessness to an extent that one had to stop one’s daily activities for at least two weeks.
* p<0.05.
‡ p-value greater than p>0.05 (F-test for the means/proportions of categories, e.g., high vs. middle vs. low for academic record).
Men |
Women |
|||
---|---|---|---|---|
SI (95% CI) | SA (95% CI) | SI* (95% CI) | SA* (95% CI) | |
Grade | ||||
7 | 1.70 (1.40, 2.05) | 2.97 (2.12, 4.16) | 2.45 (2.02, 2.97) | 4.44 (3.28, 6.02) |
8 | 1.57 (1.31, 1.89) | 2.41 (1.70, 3.41) | 1.82 (1.52, 2.17) | 2.69 (2.01, 3.60) |
9 | 1.28 (1.08, 1.52) | 1.89 (1.36, 2.62) | 1.58 (1.36, 1.84) | 2.52 (1.90, 3.34) |
10 | 1.07 (0.91, 1.24) | 1.53 (1.09, 2.15) | 1.31 (1.10, 1.55) | 1.91 (1.40, 2.60) |
11 | 1.09 (0.95, 1.25) | 1.49 (1.05, 2.12) | 1.19 (1.02, 1.38) | 1.50 (1.15, 1.95) |
12 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Academic record | ||||
High | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Middle | 1.05 (0.94, 1.17) | 1.19 (0.94, 1.50) | 1.00 (0.90, 1.12) | 1.11 (0.92, 1.33) |
Low | 1.09 (0.98, 1.22) | 1.05 (0.84, 1.31) | 1.17 (1.06, 1.29) | 1.47 (1.22, 1.77) |
Economic conditions | ||||
High | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Middle | 1.06 (0.95, 1.18) | 0.90 (0.70, 1.17) | 0.97 (0.87, 1.07) | 0.72 (0.60, 0.86) |
Low | 1.31 (1.14, 1.50) | 1.25 (0.96, 1.62) | 1.34 (1.20, 1.51) | 1.07 (0.87, 1.31) |
Disease | ||||
Yes | 1.13 (1.04, 1.23) | 1.09 (0.91, 1.31) | 1.18 (1.09, 1.28) | 1.34 (1.15, 1.56) |
No | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Father’s education | ||||
Middle school grad | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
High school grad | 1.00 (0.84, 1.20) | 1.32 (0.95, 1.85) | 0.88 (0.75, 1.04) | 0.99 (0.76, 1.29) |
College grad/higher | 1.08 (0.90, 1.29) | 1.15 (0.80, 1.65) | 0.90 (0.76, 1.08) | 1.02 (0.74, 1.42) |
Mother’s education | ||||
Middle school grad | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
High school grad | 0.88 (0.74, 1.04) | 0.66 (0.49, 0.88) | 0.93 (0.79, 1.11) | 1.04 (0.77, 1.40) |
College grad/higher | 0.99 (0.82, 1.19) | 0.85 (0.59, 1.22) | 0.97 (0.79, 1.18) | 1.07 (0.76, 1.50) |
Self-rated health | ||||
Healthy | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Neither healthy nor unhealthy | 1.39 (1.26, 1.53) | 1.50 (1.24, 1.81) | 1.37 (1.26, 1.48) | 1.23 (1.08, 1.41) |
Unhealthy | 2.01 (1.72, 2.36) | 2.35 (1.81, 3.06) | 1.83 (1.62, 2.06) | 1.89 (1.56, 2.30) |
Drinking | ||||
No | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Yes | 1.11 (1.01, 1.22) | 1.14 (0.91, 1.42) | 1.33 (1.21, 1.46) | 1.31 (1.11, 1.55) |
Smoking | ||||
No | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Yes | 1.23 (1.13, 1.35) | 1.51 (1.25, 1.81) | 1.54 (1.39, 1.71) | 1.91 (1.60, 2.29) |
Drug consumption | ||||
No | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Yes | 1.65 (1.23, 2.20) | 3.56 (2.49, 5.10) | 2.26 (1.62, 3.15) | 3.37 (2.24, 5.08) |
Physical activity | ||||
0 | 1.23 (1.06, 1.44) | 1.06 (0.81, 1.39) | 1.02 (0.86, 1.22) | 0.90 (0.68, 1.19) |
1-2 | 1.02 (0.90, 1.16) | 0.83 (0.64, 1.07) | 1.05 (0.87, 1.26) | 0.90 (0.69, 1.19) |
3-4 | 1.04 (0.90, 1.19) | 0.88 (0.66, 1.18) | 1.07 (0.89, 1.29) | 1.10 (0.81, 1.49) |
≥5 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Leisure | ||||
0-1 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
1-2 | 0.98 (0.86, 1.11) | 1.04 (0.83, 1.29) | 0.92 (0.83, 1.02) | 1.03 (0.83, 1.27) |
2-3 | 0.99 (0.86, 1.13) | 1.09 (0.85, 1.40) | 0.98 (0.86, 1.12) | 1.19 (0.94, 1.51) |
3-4 | 1.03 (0.87, 1.22) | 1.10 (0.81, 1.51) | 1.08 (0.94, 1.23) | 1.09 (0.85, 1.39) |
≥4 | 1.20 (1.03, 1.39) | 1.34 (1.02, 1.75) | 1.07 (0.95, 1.22) | 1.19 (0.95, 1.49) |
Sleep duration | ||||
0-4 | 1.72 (1.38, 2.15) | 2.68 (1.89, 3.80) | 1.35 (1.12, 1.63) | 1.71 (1.32, 2.22) |
4-5 | 1.21 (1.04, 1.40) | 1.17 (0.84, 1.62) | 1.33 (1.19, 1.50) | 1.27 (1.02, 1.57) |
5-6 | 1.05 (0.93, 1.19) | 1.01 (0.78, 1.31) | 0.98 (0.88, 1.09) | 0.94 (0.76, 1.17) |
6-7 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
7-8 | 0.96 (0.84, 1.09) | 0.94 (0.72, 1.22) | 0.88 (0.78, 1.00) | 0.92 (0.74, 1.14) |
≥8 | 0.79 (0.65, 0.94) | 0.89 (0.62, 1.29) | 0.85 (0.70, 1.03) | 0.83 (0.61, 1.14) |
Depressed mood | ||||
No | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
Yes | 9.24 (8.36, 10.20) | 10.44 (8.27, 13.18) | 6.70 (6.16, 7.29) | 7.97 (6.50, 9.77) |