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Table 3 Negative binomial regression models showing the association between mental health, alcohol misuse and smoking with number of NCDs (n = 8452)

From: Hospital admissions for non-communicable disease in the UK military and associations with alcohol use and mental health: a data linkage study

  Median number of NCDs (IQR)a Unadjusted Incidence Rate Ratio (IRR) (95% CI) Adjusted IRR (95% CI)b Adjusted IRR (95% CI)c Adjusted IRR (95% CI)d
PTSD
 Non-case 1 (1–2) 1.00 1.00 1.00 1.00
 Case 1 (1–2) 1.86 (1.39–2.48) 1.91 (1.42–2.56) 1.78 (1.34–2.37) 1.78 (1.32–2.40)
CMD
 Non-case 1 (1–2) 1.00 1.00 1.00 1.00
 Case 1 (1–2) 1.35 (1.12–1.61) 1.41 (1.19–1.69) 1.38 (1.16–1.65) 1.40 (1.16–1.68)
Alcohol misuse
 Current never drinkers 2 (1–2) 1.13 (0.67–1.92) 1.22 (0.68–2.20) 1.21 (0.67–2.18)  
 Low risk drinking (0–7) 1 (1–2) 1.00 1.00 1.00  
 Hazardous drinking (8–15) 1 (1–2) 0.87 (0.73–1.04) 1.00 (0.84–1.19) 1.00 (0.84–1.18)  
 Harmful drinking/possible dependence (16+) 1 (1–1) 0.76 (0.60–0.97) 1.03 (0.80–1.31) 1.02 (0.80–1.31)  
Binge drinking at phase 2
 Monthly or less 1 (1–2) 1.00 1.00 1.00  
 Weekly or more 1 (1–2) 0.84 (0.71–0.99) 0.95 (0.81–1.11) 0.96 (0.81–1.12)  
Smoking status at phase 2
 Non-smoker 1 (1–2) 1.00 1.00 1.00  
 Ex-smoker 1 (1–2) 1.28 (1.07–1.52) 1.22 (0.94–1.34) 1.11 (0.94–1.33)  
 Smoker 1 (1–2) 1.34 (1.09–1.65) 1.36 (1.12–1.65) 1.35 (1.12–1.64)  
  1. aWeighted medians and interquartile ranges are reported for those who had at least one NCD
  2. bAdjusted for age, gender, marital status, rank, serving status, engagement type, service branch, deployment to Iraq or Afghanistan and primary role in parent unit
  3. cAdditionally adjusted for family relationship adversity in childhood
  4. dAdditionally adjusted for alcohol misuse and smoking status
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