Table 5 Risk of dying on days with a mean apparent temperature of 30°C (lag 0–1) versus days with a mean apparent temperature of 20°C among people age 65+ years who died in hospital and were already in hospital two days before death: effect modification by nine groups of diagnoses figuring as the primary cause of the hospital admission two days before death
Acute conditions (ICD-9 code)%OR (95% CI)* (unadjusted)OR (95% CI)* (age-adjusted)REM index† (p value)
Cardiovascular diseases
Acute myocardial infarction (ICD-9: 410)3.91.16 (0.90 to 1.51)1.19 (0.90 to 1.56)0.88 (0.374)
Diseases of pulmonary circulation (ICD-9: 415–417)0.91.82 (1.06 to 3.14)2.07 (1.04 to 4.12)1.55 (0.215)
Cardiac dysrhythmias (ICD-9: 427)3.11.16 (0.86 to 1.57)1.18 (0.86 to 1.61)0.88 (0.415)
Heart failure (ICD-9: 428)5.91.66 (1.33 to 2.07)1.69 (1.34 to 2.14)1.28 (0.047)
Cerebrovascular diseases (ICD-9: 430–438)12.91.60 (1.39 to 1.85)1.59 (1.37 to 1.84)1.22 (0.019)
Respiratory diseases
Pneumonia (ICD-9: 480–486)4.21.43 (1.12 to 1.83)1.48 (1.14 to 1.91)1.10 (0.468)
Chronic pulmonary diseases (ICD-9: 490–505)1.72.08 (1.33 to 3.26)2.48 (1.50 to 4.09)1.87 (0.015)
Other diseases
Acute and chronic liver diseases (ICD-9: 570–572)2.21.03 (0.67 to 1.58)1.21 (0.61 to 2.43)0.90 (0.776)
Renal failure (ICD-9: 584–588)2.40.88 (0.62 to 1.24)0.91 (0.64 to 1.31)0.68 (0.035)
  • *Odds ratio (OR) and 95% confidence intervals (CI).

  • †REM, relative effect modification index is calculated as the ratio between the specific OR and the OR from the reference category (from the age-adjusted model).