Table 2.
Weighteda prevalence of mental health disorders in the KCMHR military health study by key demographics, % and 95% confidence intervals (CI)
| Variable | PTSD symptoms | Any neurotic disorderd | Alcohol abuse | |||
| % | 95% CI | % | 95% CI | % | 95% CI | |
| Age at interview (years) | ||||||
| < 30 | 5.4% | 1.9 - 14.2 | 23.2% | 13.9 - 36.3 | 44.1% | 31.2 - 57.8 |
| 30-34 | 8.8% | 3.6 - 20.1 | 11.1% | 5.6 - 20.6 | 19.3% | 11.0 - 31.6 |
| 35-39 | 2.7% | 1.6 - 4.5 | 14.7% | 8.6 - 24.2 | 18.4% | 11.3 - 28.7 |
| 40-44 | 5.5% | 2.9 - 10.3 | 12.6% | 7.5 - 20.4 | 12.0% | 7.0 - 20.0 |
| 45+ | 2.9% | 1.3 - 6.3 | 9.3% | 5.3 - 16.0 | 7.2% | 3.8 - 13.2 |
| p-valueb | 0.18 | 0.13 | < 0.01 | |||
| Sex | ||||||
| Male | 5.1% | 3.4 - 7.7 | 14.1% | 10.9 - 18.1 | 19.5% | 15.5 - 24.1 |
| Female | 1.9% | 0.8 - 4.2 | 8.4% | 4.1 - 16.3 | 5.9% | 2.3 - 14.0 |
| p-valueb | 0.02 | 0.15 | < 0.01 | |||
| Educational attainment at phase 1 | ||||||
| No qualifications | 18.4% | 7.3 - 39.1 | 23.3% | 11.9 - 40.6 | 28.4% | 13.7 - 49.7 |
| O level equivalent | 4.3% | 2.3 - 8.0 | 15.0% | 10.2 - 21.7 | 23.2% | 16.6 - 31.3 |
| A level equivalent | 2.8% | 1.7 - 4.5 | 15.7% | 9.6 - 24.6 | 14.9% | 9.2 - 23.4 |
| Degree | 5.2% | 2.3 - 11.3 | 6.9% | 3.9 - 12.1 | 13.1% | 7.8 - 21.3 |
| p-valueb | < 0.01 | 0.05 | 0.11 | |||
| Marital status at interview | ||||||
| Single/not cohabiting | 6.8% | 3.0 - 14.8 | 16.7% | 9.7 - 27.1 | 28.4% | 18.8 - 40.5 |
| Married/long-term relationship | 4.1% | 2.6 - 6.6 | 11.6% | 8.4 - 15.7 | 14.6% | 10.8 - 19.5 |
| Divorced/separated/widowed | 5.8% | 1.9 - 16.3 | 19.8% | 10.8 - 33.4 | 23.3% | 13.4 - 37.4 |
| p-valueb | 0.56 | 0.20 | 0.02 | |||
| Vulnerability factors | ||||||
| 0 or 1 | 5.5% | 2.4 - 12.1 | 6.0% | 2.9 - 11.7 | 10.9% | 5.6 - 19.9 |
| 2 or 3 | 2.0% | 1.2 - 3.1 | 10.2% | 6.0 - 16.7 | 13.7% | 8.9 - 20.6 |
| 4 or 5 | 2.4% | 1.3 - 4.3 | 14.9% | 8.5 - 24.8 | 25.8% | 16.7 - 37.7 |
| 6+ | 10.3% | 5.3 - 18.9 | 20.9% | 13.8 - 30.5 | 26.5% | 17.9 - 37.3 |
| p-valueb | < 0.01 | 0.01 | 0.01 | |||
| Rankc | ||||||
| Officer | 4.6% | 2.0 - 10.4 | 3.6% | 1.5 - 8.1 | 10.2% | 5.9 - 17.0 |
| Other rank | 4.9% | 3.2 - 7.5 | 17.5% | 13.6 - 22.3 | 21.3% | 16.7 - 26.7 |
| p-valueb | 0.90 | < 0.01 | 0.01 | |||
| Medical downgrading since Jan 2003 | ||||||
| No | 4.9% | 3.1 - 7.5 | 13.9% | 10.5 - 18.2 | 20.0% | 15.7 - 25.0 |
| Yes | 4.6% | 2.0 - 10.3 | 12.0% | 7.5 - 18.7 | 10.9% | 6.4 - 18.0 |
| p-valueb | 0.89 | 0.59 | 0.03 | |||
| Serving status at interview | ||||||
| Serving | 4.8% | 3.0 - 7.6 | 12.0% | 8.9 - 15.9 | 17.9% | 13.9 - 22.8 |
| Veteran | 4.8% | 2.7 - 8.5 | 19.0% | 12.3 - 28.4 | 18.5% | 11.5 - 28.4 |
| p-valueb | > 0.99 | 0.08 | 0.91 | |||
| Service | ||||||
| Naval service | 2.7% | 1.3 - 5.6 | 5.2% | 2.9 - 9.2 | 9.2% | 3.8 - 20.8 |
| Army | 6.2% | 4.0 - 9.5 | 13.0% | 9.7 - 17.1 | 21.6% | 16.9 - 27.1 |
| Royal Air Force | 1.2% | 0.6 - 2.6 | 20.3% | 12.1 - 32.0 | 11.1% | 5.9 - 20.0 |
| p-valueb | < 0.01 | 0.02 | 0.02 | |||
| Role in parent unit at phase 1 | ||||||
| Combat | 7.9% | 4.2 - 14.5 | 14.5% | 8.9 - 22.8 | 26.4% | 17.5 - 37.7 |
| Combat support | 2.2% | 1.0 - 4.8 | 9.9% | 3.8 - 23.4 | 26.8% | 13.5 - 46.2 |
| Combat service support | 4.4% | 2.6 - 7.3 | 13.4% | 9.9 - 17.9 | 13.2% | 9.8 - 17.6 |
| p-valueb | 0.10 | 0.76 | 0.01 | |||
| Status at phase 1 | ||||||
| Regular | 5.1% | 2.8 - 9.1 | 15.5% | 10.9 - 21.6 | 21.4% | 15.6 - 28.2 |
| Reserve | 4.5% | 2.8 - 7.1 | 11.3% | 8.2 - 15.4 | 14.4% | 10.4 - 19.5 |
| p-valueb | 0.74 | 0.18 | 0.07 | |||
| Previous deployments (by status at phase 1) | ||||||
| Regulars & reserves: | ||||||
| None | 1.5% | 0.8 - 2.9 | 9.7% | 5.7 - 16.0 | 14.2% | 8.5 - 22.9 |
| TELIC 1 | 5.8% | 3.4 - 9.8 | 13.1% | 8.8 - 19.0 | 16.9% | 11.5 - 24.1 |
| TELIC 2 or later | 4.3% | 2.1 - 8.5 | 17.2% | 11.2 - 25.6 | 25.2% | 17.8 - 34.4 |
| Other recent deployments | 10.2% | 3.5 - 26.2 | 13.7% | 5.6 - 29.6 | 12.1% | 4.8 - 27.1 |
| p-valueb | 0.06 | 0.46 | 0.14 | |||
| Regulars: | ||||||
| None | 2.4% | 1.0 - 5.6 | 10.5% | 4.4 - 23.0 | 16.6% | 7.1 - 34.1 |
| TELIC 1 | 4.8% | 1.6 - 13.9 | 12.8% | 6.2 - 24.6 | 23.5% | 13.4 - 37.9 |
| TELIC 2 or later | 4.6% | 1.8 - 11.2 | 20.2% | 12.1 - 31.9 | 26.4% | 17.0 - 38.5 |
| Other recent deployments | 9.5% | 2.5 - 29.6 | 15.0% | 5.5 - 35.0 | 11.8% | 4.0 - 30.0 |
| p-valueb | 0.46 | 0.55 | 0.40 | |||
| Reserves: | ||||||
| None | 1.0% | 0.4 - 2.7 | 9.2% | 4.7 - 17.4 | 12.7% | 6.6 - 23.1 |
| TELIC 1 | 6.5% | 3.6 - 11.4 | 13.3% | 8.4 - 20.4 | 12.3% | 7.3 - 19.9 |
| TELIC 2 or later | 3.4% | 1.6 - 7.0 | 10.7% | 5.5 - 19.8 | 22.6% | 12.7 - 36.9 |
| Other recent deployments | 13.3% | 2.3 - 49.7 | 8.3% | 2.9 - 21.5 | 13.3% | 2.3 - 49.7 |
| p-valueb | 0.04 | 0.66 | 0.43 | |||
a Weighted to take account of sample weights
b For chi-squared test comparing prevalence across the categories of the independent variable
c Rank at interview for serving personnel; last held rank for veterans
d Any depressive syndrome, any anxiety syndrome or somatisation disorder