Table 5

HR of out-of-hospital cardiac arrest (OHCA) in patients with long-term stress conditions or anxiety: stratification according to cardiovascular disease

Cases
(n=35.195)
Controls
(n=351.950)
Crude HR
(95% CI)
Adjusted HR
(95% CI)
Present18.965104.524
 Neither of the two diagnoses18.604 (98.10%)103.424 (98.95%)ReferenceReference
 Long-term stress165 (0.87%)519 (0.50%)1.77 (1.48 to 2.11)1.13 (0.94 to 1.36)
 Anxiety178 (0.94 %)533 (0.51%)1.86 (1.57 to 2.20)1.36 (1.13 to 1.63)
 Both diagnoses18 (0.09%)48 (0.05%)2.09 (1.21 to 3.58)1.28 (0.72 to 2.27)
Absent16.230247.426
 Neither of the two diagnoses15.927 (98.13%)245.513 (99.23%)ReferenceReference
 Long-term stress159 (0.98%)1.058 (0.43%)2.32 (1.96 to 2.74)1.59 (1.34 to 1.89)
 Anxiety121 (0.75 %)765 (0.31%)2.44 (2.01 to 2.96)1.64 (1.35 to 2.00)
 Both diagnoses23 (0.14%)90 (0.04%)3.94 (2.49 to 6.23)2.33 (1.46 to 3.73)
  • Numbers in table are number (%) unless indicated otherwise. HR adjusted for presence of cardiovascular disease, depression and the use of QT-prolonging drugs. Furthermore, by conducting stratified analyses according cardiovascular disease, the original matching on age and sex was lost. Therefore, HRs were additionally adjusted for age and sex.

  • P value interaction: long-term stress=0.8973, anxiety=0.5988, both diagnoses=0.1667.