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Table 4 Inpatient hospital contact for Sexually Transmitted Infections (STIs), by age, calendar period, parental education level, and psychiatric history

From: Sexually transmitted infections after bereavement – a population-based cohort study

  Any STI Acute salpingitis HIV/HBV
  No bereavement Bereavement IRR (95 % CI) No bereavement Bereavement IRR (95 % CI) a No Bereavement Bereavement IRR (95 % CI)
Age at follow-up
 10 to 18 years 1181 71 1.15 (0.90–1.45) 1999 163 1.46 (1.24–1.71) 89 6 1.44 (0.56–3.05)
 19 to 29 years 3709 494 1.15 (1.04–1.26) 5785 898 1.18 (1.08–1.28) 243 56 1.98 (1.46–2.65)
 30 to 44 years 1013 623 1.18 (1.06–1.31) 3577 2479 1.19 (1.07–1.33) 223 195 1.73 (1.41–2.12)
Calendar period of follow-up
 1987 – 2000 4549 980 1.15 (1.06–1.24) 10291 3101 1.24 (1.08–1.42) 292 148 1.65 (1.32–2.05)
 2001 – 2012 1354 208 1.19 (1.02–1.39) 1070 439 1.28 (1.13–1.44) 263 109 1.98 (1.54–2.53)
Parental education level
 Low/ Missing 1208 598 1.18 (1.06–1.31) 3173 2063 1.24 (1.00–1.54) 125 125 1.79 (1.37–2.34)
 Middle 3002 428 1.15 (1.03–1.27) 5700 1151 1.32 (1.09–1.59) 260 99 2.03 (1.58–2.59)
 High 1693 162 1.17 (0.99–1.38) 2488 326 1.25 (1.02–1.54) 170 33 1.48 (0.99–2.17)
History of psychiatric disorders
 No 5353 1121 1.19 (1.11–1.28) 10595 3318 1.28 (1.13–1.45) 352 174 2.08 (1.70–2.56)
 Yes 550 67 0.88 (0.67–1.15) 766 222 1.26 (1.01–1.58) 203 83 1.95 (1.46–2.58)
History of substance abuse
 No 5827 1178 1.18 (1.10–1.26) 11253 3502 1.17 (1.13–1.22) 408 206 2.14 (1.77–2.59)
 Yes 76 10 0.78 (0.36–1.51) 108 38 1.14 (0.75–1.69) 147 51 1.36 (0.95–1.92)
  1. Notes:
  2. The first hospital visit concerning an STI diagnosis during the unexposed follow-up and the first hospital visit concerning an STI diagnosis during the exposed follow-up were both counted in all analyses
  3. CI confidence interval, HBV hepatitis B virus, HIV human immunodeficiency virus, IRR incidence rate ratio, N number, STIs sexually transmitted infections
  4. IRR was adjusted for attained age (10–12, 13–15, 16–18, 19–21, 22–25, 26–29, 30–34, 35–39, and 40–44), calendar years (5-year group), and parental education levels (low/missing, medium, and high) as a proxy for socioeconomic status
  5. a Negative binomial regression was used due to over-dispersed Poisson regression