Table 3 Association between health conditions and prescribed medications and being re-hospitalized for intentional poisoning within one year as compared to being hospitalized only once, crude and adjusted odds ratios (OR) with 95% confidence intervals (95% CI), stratified by sex

Comorbidity²

Psychiatric illness

Disease of the circulatory system

Musculoskeletal disease

1.90 (1.62–2.29)

1.22 (0.93–1.61)

1.08 (0.73–1.62)

1.70 (1.45–2.01)

1.45 (1.10–1.94)

1.14 (0.75–1.74)

2.00 (1.73–2.35)

0.96 (0.71–1.30)

1.21 (0.88–1.66)

1.89 (1.60–2.19)

1.18 (0.85–1.63)

1.27 (0.90–1.76)

Previous illness³

Psychiatric illness

Disease of the circulatory system

Musculoskeletal disease

Alcohol abuse

Substance abuse

Intentional injury other than poisoning

2.12 (1.79–2.50)

1.01 (0.85–1.20)

1.26 (1.03–1.53)

1.84 (1.55–2.18)

1.86 (1.49–2.32)

1.79 (1.52–2.12)

1.90 (1.59–2.26)

1.17 (0.97–1.41)

1.28 (1.04–1.57)

1.62 (1.35–1.94)

1.70 (1.35–2.14)

1.85 (1.56–2.20)

2.49 (2.17–2.87)

1.08 (0.92–1.27)

1.26 (1.07–1.48)

2.17 (1.81–2.60)

2.69 (2.19–3.30)

1.78 (1.55–2.04)

2.29 (1.98–2.66)

1.26 (1.06–1.51)

1.27 (1.08–1.50)

1.90 (1.58–2.29)

2.45 (1.98–3.02)

1.85 (1.60–2.13)

Number of prescribed medications³

0

1

2–4

5–9

≥ 10

1.0 (REF)

0.92 (0.68–1.25)

1.03 (0.81–1.31)

1.28 (0.99–1.64)

1.22 (0.87–1.68)

1.0 (REF)

0.97 (0.71–1.33)

1.12 (0.86–1.42)

1.44 (1.12–1.87)

1.49 (1.07–2.07)

1.0 (REF)

1.22 (0.90–1.65)

1.51 (1.17–1.94)

1.91 (1.48–2.46)

2.12 (1.58–2.83)

1.0 (REF)

1.25 (0.91–1.70)

1.51 (1.16–1.94)

1.97 (1.52–2.55)

2.30 (1.71–3.10)