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Table 2 Hazard ratios (95 % confidence Intervals) in the stratified analysis comparing mortality risk related to leisure time physical activity of patients with high versus low depression and high versus low social support

From: Do heart failure status and psychosocial variables moderate the relationship between leisure time physical activity and mortality risk among patients with a history of myocardial infarction?

  High depressiona Low depressiona p-value interaction term High social supporta Low social supporta p-value interaction term
HR b (95 % CI) HR b (95 % CI) HR b (95 % CI) HR 2 (95 % CI)
No LTPA: Reference category 1 1   1 1  
Irregular LTPA 0.80 (0.52, 1.24) 0.63 (3.4, 1.15) 0.63 0.82 (0.47, 1.43) 0.69 (0.44, 1.09) 0.56
1–150 min 0.43 (0.25, 0.75) 0.69 (0.36, 1.32) 0.08 0.71 (0.39, 1.27) 0.40 (0.21, 0.77) 0.09
151–300 min 0.28 (0.13, 0.58) 0.45 (0.23, 0.88) 0.41 0.40 (0.20, 0.80) 0.30 (0.14, 0.62) 0.45
>300 min 0.48 (0.29, 0.81) 0.42 (0.20, 0.86) 0.82 0.38 (0.19, 0.79) 0.51 (0.30, 0.87) 0.10
p for trend >0.01 >0.01 0.39 >0.01 >0.01 0.56
  1. HR hazard ratio, CI confidence interval, LTPA leisure time physical activity
  2. aBased on a cutoff value of median depression = 7 and median social support = 5.6
  3. bHR adjusting for age and sex