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Table 2 Weighteda prevalence of mental health disorders in the KCMHR military health study by key demographics, % and 95% confidence intervals (CI)

From: The prevalence of common mental disorders and PTSD in the UK military: using data from a clinical interview-based study

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  
  1. a Weighted to take account of sample weights
  2. b For chi-squared test comparing prevalence across the categories of the independent variable
  3. c Rank at interview for serving personnel; last held rank for veterans
  4. d Any depressive syndrome, any anxiety syndrome or somatisation disorder