Table 1.
Cohort characteristics by PTSD diagnosis status.
| PTSD (N = 22,361; 0•7%) | No PTSD (N = 3155,345; 99•3%) | |||
|---|---|---|---|---|
| Person-years1 n (%) | Suicide n (%) | Person-years1 n (%) | Suicide cases n (%) | |
| Total | 356,172 (100) | 192 (0•9)2 | 48,721,903 (100) | 6127 (0•2)2 |
| Sociodemographic factors | ||||
| Age at cohort exit [years: median (IQR)] | 31•9 (26•0–38•0) | 28•2 (23•9–33•3) | 30•5 (24•9–37•1) | 25•2 (21•2–30•6) |
| Natal sex | ||||
| Male | 102,645 (28•8) | 69 (35•9) | 25,058,232 (51•4) | 4464 (72•9) |
| Female | 253,527 (71•2) | 123 (64•1) | 23,663,671 (48•6) | 1663 (27•1) |
| Country of origin | ||||
| Sweden | 251,747 (70•7) | 147 (76•2) | 41,759,042 (85•7) | 5438 (88•8) |
| Finland | 1497 (0•4) | – | 186,727 (0•4) | 56 (0•9) |
| Other Nordic countries | 1657 (0•5) | 4 (2•1) | 264,575 (0•5) | 26 (0•4) |
| Western & Southern Europe | 2663 (0•7) | 1 (0•5) | 453,140 (0•9) | 30 (0•5) |
| Eastern Europe & Russia | 27,762 (7•8) | 13 (6•8) | 1707,230 (3•5) | 141 (2•3) |
| Asia & Oceania | 14,328 (4) | 10 (5•2) | 1243,530 (2•6) | 143 (2•3) |
| Middle East & North Africa | 39,623 (11•1) | 10 (5•2) | 1844,773 (3•8) | 144 (2•4) |
| Sub-Saharan Africa | 8039 (2•3) | 5 (2•6) | 635,435 (1•3) | 55 (0•9) |
| North America | 1621 (0•5) | – | 164,200 (0•3) | 18 (0•3) |
| South America | 7235 (2) | 2 (1•0) | 463,251 (1) | 76 (1•2) |
| Area level characteristics | ||||
| Population density3 | ||||
| 1 (Most rural) | 62,705 (17•6) | 36 (18•8) | 10,471,947 (21•5) | 1366 (22•3) |
| 2 | 62,502 (17•5) | 33 (17•2) | 10,278,574 (21•1) | 1263 (20•6) |
| 3 | 63,835 (17•9) | 38 (19•8) | 10,084,757 (20•7) | 1192 (19•5) |
| 4 | 78,566 (22•1) | 42 (21•9) | 9625,205 (19•8) | 1216 (19•9) |
| 5 (Most urban) | 88,564 (24•9) | 43 (22•4) | 8261,420 (17) | 1090 (17•8) |
| Deprivation index | ||||
| 1 (least deprived) | 51,607 (14•5) | 26 (13•5) | 10,351,971 (21•2) | 1097 (17•9) |
| 2 | 55,856 (15•7) | 31 (16•2) | 9956,957 (20•4) | 1142 (18•6) |
| 3 | 67,708 (19) | 35 (18•2) | 10,144,911 (20•8) | 1273 (20•8) |
| 4 | 81,262 (22•8) | 53 (27•6) | 9853,343 (20•2) | 1415 (23•1) |
| 5 (most deprived) | 99,739 (28) | 47 (24•5) | 8414,721 (17•3) | 1200 (19•6) |
| Clinical characteristics4 | ||||
| Previous major depression or anxiety disorders | 50,234 (14•1) | 70 (36•5) | 4962,487 (10•2) | 2370 (38•7) |
| Previous bipolar disorder diagnosis | 20,676 (5•8) | 21 (10•9) | 496,721 (1) | 340 (5•6) |
| Previous non-affective psychosis diagnosis | 16,453 (4•6) | 19 (9•9) | 426,068 (0•9) | 633 (10•3) |
| Previous non-fatal suicide attempts | 82,387 (23•1) | 108 (56•3) | 1630,277 (3•3) | 1602 (26.1) |
| Parental history of SMI5 | 23,996 (6•7) | 27 (14•1) | 1625,511 (3•3) | 550 (9•0) |
PTSD: post-traumatic stress disorder; IQR: interquartile range; CMD: common mental disorder; SMI: severe mental illness.
1 Rounded to the nearest integer.
2 Percentage of those with or without PTSD.
3 People per km2, quintiles.
4 Diagnosis made either before PTSD (in those with PTSD) or before cohort exit (in those without PTSD).
5 Severe mental illness in biological parents.