Table 1 Descriptive characteristics of study population.
PM10 1st quartile | PM10 2nd quartile | PM10 3rd quartile | PM10 4th quartile | p value | |
|---|---|---|---|---|---|
Suicide events | 765 | 767 | 759 | 760 | |
PM10 range (event day) | 5.5–30.8 | 30.9–42.1 | 42.2–56.3 | 56.5–558.9 | |
Lag0 PM10, µg/m3, mean (SD) | 23.6 (5.5) | 36.6 (3.2) | 48.9 (4.0) | 78.7 (44.0) | < 0.001 |
Lag0 PM2.5, µg/m3, mean (SD) | 12.5 (4.3) | 20.8 (4.7) | 27.8 (6.2) | 40.3 (13.6) | < 0.001 |
Lag0 PM2.5–10, µg/m3, mean (SD) | 11.1 (3.5) | 15.8 (4.2) | 21.1 (6.0) | 38.4 (40.7) | < 0.001 |
Age, years, mean (SD) | 60.4 (14.9) | 61.2 (15.5) | 60.9 (14.5) | 60.7 (14.4) | 0.322 |
Age, years, N (%) | 0.279 | ||||
20–39 | 157 (20.5) | 128 (16.7) | 141 (18.6) | 146 (19.2) | |
≥ 40 | 608 (79.5) | 639 (83.3) | 618 (81.4) | 614 (80.8) | |
Sex, N (%) | 0.137 | ||||
Men | 425 (55.6) | 464 (60.5) | 424 (55.9) | 422 (55.5) | |
Women | 340 (44.4) | 303 (39.5) | 335 (44.1) | 338 (44.5) | |
Household income, N (%) | 0.346 | ||||
1st (highest) | 230 (30.1) | 266 (34.7) | 226 (29.8) | 231 (30.4) | |
2nd | 152 (19.9) | 165 (21.5) | 168 (22.1) | 173 (22.8) | |
3rd | 159 (20.8) | 150 (19.6) | 160 (21.1) | 160 (21.1) | |
4th (lowest) | 224 (29.3) | 186 (24.3) | 205 (27.0) | 196 (25.8) | |
Disease duration, N (%) | 0.930 | ||||
< 5 years | 350 (45.8) | 355 (46.3) | 360 (47.4) | 353 (46.5) | |
≥ 5 years | 415 (54.2) | 412 (53.7) | 399 (52.6) | 407 (53.5) | |
Participants who underwent health examinations | 419 | 460 | 419 | 393 | 0.338 |
Alcohol intake, N (%) | |||||
No | 252 (60.1) | 267 (58.0) | 247 (58.9) | 251 (63.9) | |
Yes | 167 (39.9) | 193 (42.0) | 172 (41.0) | 142 (36.1) | |
Physical activity, N (%) | 0.610 | ||||
No | 225 (53.7) | 253 (55.0) | 238 (56.8) | 228 (58.0) | |
Yes | 194 (46.3) | 207 (45.0) | 181 (43.2) | 165 (42.0) | |
