Table 1.Case numbers, proportions and F test results for equal proportions of SI/SA in Korea for Year 2009
|
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) |
Table 2.The odds ratios and 95% confidence intervals (CIs) of SI/SA by gender regarding sleep duration, depressed mood and other factors in Korea for Year 2009
|
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) |
Table 3.The odds ratios and 95% confidence intervals (CIs) of men’s suicidal ideation/attempt by depressed mood regarding sleep duration and other significant factors in Korea for Year 2009
|
Suicidal ideation |
Suicidal attempt |
|
Depressed mood (95% CI) |
No depressed mood (95% CI) |
Depressed mood (95% CI) |
No depressed mood (95% CI) |
Grade |
|
|
|
|
7 |
1.59 (1.31, 1.94) |
2.03 (1.42, 2.89) |
2.53 (1.77, 3.60) |
7.84 (3.36, 18.30) |
8 |
1.41 (1.14, 1.74) |
2.02 (1.45, 2.81) |
2.14 (1.48, 3.12) |
5.03 (2.19, 11.56) |
9 |
1.21 (1.01, 1.45) |
1.51 (1.08, 2.10) |
1.70 (1.20, 2.40) |
4.01 (1.75, 9.22) |
10 |
1.09 (0.94, 1.27) |
1.01 (0.71, 1.44) |
1.51 (1.08, 2.11) |
1.73 (0.71, 4.19) |
11 |
1.10 (0.95, 1.27) |
1.10 (0.82, 1.47) |
1.36 (0.96, 1.93) |
2.77 (1.09, 7.00) |
12 |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
Self-rated health |
|
|
|
|
Healthy |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
Neither healthy nor unhealthy |
1.30 (1.15, 1.47) |
1.60 (1.35, 1.90) |
1.36 (1.11, 1.67) |
2.42 (1.36, 4.31) |
Unhealthy |
1.87 (1.57, 2.23) |
2.46 (1.88, 3.22) |
2.15 (1.62, 2.85) |
3.95 (1.95, 7.99) |
Sleep duration |
|
|
|
|
0-4 |
1.64 (1.29, 2.08) |
2.06 (1.34, 3.17) |
2.50 (1.69, 3.69) |
3.89 (1.74, 8.66) |
4-5 |
1.12 (0.93, 1.34) |
1.52 (1.17, 1.97) |
1.09 (0.78, 1.52) |
1.70 (0.79, 3.69) |
5-6 |
1.02 (0.88, 1.19) |
1.12 (0.89, 1.41) |
0.97 (0.74, 1.27) |
1.24 (0.66, 2.35) |
6-7 |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
7-8 |
1.01 (0.86, 1.20) |
0.85 (0.67, 1.08) |
0.95 (0.70, 1.29) |
0.87 (0.46, 1.64) |
≥8 |
0.95 (0.77, 1.19) |
0.51 (0.35, 0.73) |
1.11 (0.74, 1.65) |
0.15 (0.05, 0.49) |
Table 4.The odds ratios and 95% confidence intervals (CIs) of women’s suicidal ideation/attempt by depressed mood regarding sleep duration and other significant factors in Korea for Year 2009
|
Suicidal ideation
|
Suicidal attempt
|
|
Depressed mood (95% CI) |
No depressed mood (95% CI) |
Depressed mood (95% CI) |
No depressed mood (95% CI) |
Grade |
|
|
|
|
7 |
2.51 (2.05, 3.08) |
2.37 (1.69, 3.32) |
4.08 (3.06, 5.44) |
7.82 (3.04, 20.13 |
8 |
1.83 (1.51, 2.21) |
1.81 (1.34, 2.44) |
2.64 (1.96, 3.55) |
3.39 (1.46, 7.84) |
9 |
1.62 (1.38, 1.90) |
1.48 (1.13, 1.96) |
2.55 (1.91, 3.40) |
2.52 (1.12, 5.67) |
10 |
1.31 (1.08, 1.58) |
1.32 (1.01, 1.72) |
1.86 (1.37, 2.53) |
2.44 (1.12, 5.30) |
11 |
1.15 (0.97, 1.38) |
1.26 (0.99, 1.60) |
1.44 (1.09, 1.90) |
2.08 (0.90, 4.78) |
12 |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
Self-rated health |
|
|
|
|
Healthy |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
Neither healthy nor unhealthy |
1.26 (1.14, 1.39) |
1.66 (1.42, 1.94) |
1.23 (1.06, 1.44) |
1.24 (0.83, 1.87) |
Unhealthy |
1.72 (1.50, 1.97) |
2.15 (1.68, 2.75) |
1.89 (1.52, 2.33) |
1.96 (1.05, 3.66) |
Sleep duration |
|
|
|
|
0-4 |
1.35 (1.11, 1.65) |
1.40 (0.92, 2.13) |
1.59 (1.19, 2.14) |
2.96 (1.39, 6.33) |
4-5 |
1.39 (1.19, 1.62) |
1.17 (0.91, 1.50) |
1.25 (0.99, 1.56) |
1.50 (0.83, 2.70) |
5-6 |
0.94 (0.82, 1.07) |
1.08 (0.88, 1.33) |
0.97 (0.77, 1.22) |
0.76 (0.44, 1.30) |
6-7 |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
1.00 (reference) |
7-8 |
0.88 (0.76, 1.02) |
0.89 (0.71, 1.11) |
0.89 (0.70, 1.13) |
1.03 (0.58, 1.82) |
≥8 |
0.83 (0.67, 1.03) |
0.91 (0.64, 1.31) |
0.91 (0.64, 1.29) |
0.52 (0.18, 1.47) |