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Table 3 Age-stratified odds ratios for suicide

From: Suicide risk in primary care patients diagnosed with a personality disorder: a nested case control study

Exposure categories Suicide cases Living controls   
  n % n % Odds ratioa (95 % CI)
16–29 years:       
 No mental illness 186 51.0 5675 79.3 1.00 (Ref.)
 Other mental illness (not PD) 162 44.4 1459 20.4 3.58 (2.86–4.49)
 Personality disorder (PD) 17 4.7 19 0.3 32.57 (16.03–66.20)
 Total 365 100 7153 100   
 PD vs. other mental illness - - - - 9.09 (4.47–18.50)
30–39 years:       
 No mental illness 182 33.8 7812 73.8 1.00 (Ref.)
 Other mental illness (not PD) 329 61.2 2715 25.7 5.81 (4.79–7.05)
 Personality disorder (PD) 27 5.0 52 0.5 25.98 (15.73–42.91)
 Total 538 100 10,579 100   
 PD vs. other mental illness - - - - 4.47 (2.75–7.29)
40–49 years:       
 No mental illness 196 35.7 7727 71.6 1.00 (Ref.)
 Other mental illness (not PD) 317 57.7 2996 27.8 4.61 (3.81–5.58)
 Personality disorder (PD) 36 6.6 66 0.6 23.43 (15.13–36.28)
 Total 549 100 10,789 100   
 PD vs. other mental illness - - - - 5.08 (3.32–7.78)
50–59 years:       
 No mental illness 125 30.0 5529 67.2 1.00 (Ref.)
 Other mental illness (not PD) 274 65.7 2643 32.1 5.06 (4.04–6.34)
 Personality disorder (PD) 18 4.3 52 0.6 16.81 (9.45–29.89)
 Total 417 100 8224 100   
 PD vs. other mental illness - - - - 3.32 (1.90–5.81)
60 years and over:       
 No mental illness 198 38.5 6893 67.9 1.00 (Ref.)
 Other mental illness (not PD) 305 59.2 3214 31.7 3.52 (2.91–4.25)
 Personality disorder (PD) 12 2.3 47 0.5 9.46 (4.92–18.20)
 Total 515 100 10,154 100   
 PD vs. other mental illness - - - - 2.69 (1.41–5.15)
  1. aOdds ratio estimated by conditional logistic regression, adjusted inherently for age and gender in the matched design