Table 3.
Attributable impact of PTSD on risk of death by suicide in the population at risk.
| Total | |||
|---|---|---|---|
| % (95% CI) | Men | ||
| % (95% CI) | Women | ||
| % (95% CI) | |||
| PTSD | |||
| Population attributable risk fraction (%) | |||
| Unadjusted | 2•3 (1•9–2•8) | 1•1 (0•8–1•5) | 5•9 (4•7–7•1) |
| Adjustment 11 | 2•5 (2•0–2•9) | 1•1 (0•8–1•5) | 5•9 (4•7–7•1) |
| Adjustment 22 | 1•6 (1•2–2•1) | 0•7 (0•3–1•0) | 3•8 (2•5–5•0) |
| Attributable Fraction in the exposed (%) | |||
| Unadjusted | 76•6 (73•0–79•7) | 73•7 (66•7–79•3) | 85•5 (82•5–87•9) |
| Adjustment 11 | 81•3 (78•4–83•9) | 74•6 (67•7–80•0) | 85•3 (82•3–87•8) |
| Adjustment 22 | 53•7 (46•1–60•2) | 44•3 (28•8–56•5) | 54•7 (37•2–55•2) |
| Broadly-defined PTSD3 | |||
| Population attributable risk fraction (%) | |||
| Unadjusted | 3•3 (2•8–3•7) | 1•9 (1•5–2•4) | 7•2 (5•9–8•5) |
| Adjustment 11 | 3•4 (2•9–3•9) | 1•9 (1•5–2•4) | 7•2 (5•9–8•5) |
| Adjustment 22 | 2•4 (1•9–3•0) | 1•4 (0•9–1•8) | 4•8 (3•4–6•1) |
| Attributable Fraction in the exposed (%) | |||
| Unadjusted | 79•7 (77•0–82•1) | 80•0 (75•8–83•5) | 86•3 (83•8–88•4) |
| Adjustment 11 | 83•6 (81•4–85•6) | 80•4 (76•2–83•8) | 86•1 (83•5–88•2) |
| Adjustment 22 | 59•9 (54•2–65•0) | 58•4 (49•0–66•0) | 56•9 (48•2–64•1) |
PTSD: post-traumatic stress disorder; 95% CI: 95% confidence interval.
1 Adjustment 1: for current age, natal sex (except in stratified analyses), country of origin, population density and deprivation.
2 Adjustment 2: for variables listed in Adjustment 1, previous major depression or anxiety disorders, bipolar disorder, non-affective psychotic disorder, previous non-fatal suicide attempts and parental history of severe mental illness.
3 See first sensitivity analysis for definition.