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Table 2 Hazard ratio (HR) for use of antidepressants or anxiolytic drugs in the intervention group compared with controls adjusted for former use of AD or AX, and other confounders

From: CT-Screening for lung cancer does not increase the use of anxiolytic or antidepressant medication

  Relative risk estimates
  N, (%) Adj. HR 95 % CI
Intervention versus control status
 Control 644 (31.38) 1.00 Reference
 Intervention 634 (30.90) 1.00 0.90 1.12
Possible confounders:
Gender
 Men 561 (43.90) 1.00 Reference
 Women 717 (56.10) 1.36 1.21 1.53
Age
 ≤ mean age 57.3 years 685 (32.14) 1.00 Reference
 >mean age 57.3 years 593 (30.06) 0.92 0.82 1.03
Civil status
 Living together 806 (63.46) 1.00 Reference
 Living alone 464 (36.54) 1.26 1.12 1.42
Social status (SES)
 Low 576 (38.07) 1.00 Reference
 Middle 397 (30.70) 0.86 0.80 0.93
 High 305 (23.50) 0.43 0.37 0.49
Charlson Co-morbidity index (CCI)
 0 985 (28.89) 1.00 Reference
 1 197 (41.65) 1.25 1.14 1.37
 > 1 96 (43.44) 2.50 2.38 2.62
Prescription of AD or AX at least once during the 4 months period before baseline
 No 775 (21.78) 1.00 Reference
 Yes 503 (92.12) 18.52 16.12 21.27
Total 1,278 (31.14)