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Table 2 Mean aggregate length and results of the negative binomial regression analysis (N = 35,598)

From: Determinants of aggregate length of hospital stay in the last year of life in Switzerland

  Length of stay (days) IRR 95 % CI
Mean SD   
Age (at time of death) (p < 0.001)    0.98 0.98–0.99
Sex (p < 0.05)
 men 32.3 38.7 1.00  
 women 31.9 38.2 1.03 1.00–1.06
Cause of death (p < 0.001)
cancer (ref.) 39.1 36.4 1.00  
 coronary heart disease 23.6 34.8 0.68 0.65–0.70
 stroke 23.2 35.6 0.65 0.62–0.68
 COPD 35.6 44.3 0.89 0.83–0.95
 dementia 61.2 72.6 1.74 1.57–1.92
 other 29.0 38.3 0.81 0.78–0.83
Multimorbidity (p < 0.001)
no (ref.) 33.9 39.7 1.00  
 yes 36.6 41.3 1.07 1.04–1.10
 unknown (no hospital stay) 27.5 34.8 0.79 0.77–0.82
ICU during last stay (p < 0.001)
no (ref.) 33.3 39.5 1.00  
 1–48 h 20.3 29.9 0.65 0.62–0.67
 more than 48 h 31.3 33.2 0.97 0.93–1.01
Educational level (p < 0.001)
medium (ref.) 31.3 36.1 1.00  
 low 31.3 37.6 0.98 0.95–1.01
 high 34.4 41.5 1.05 1.01–1.09
 unknown 34.0 43.2 1.06 1.02–1.10
House or flat owner (p < 0.001)
tenant (ref.) 33.1 40.0 1.00  
 owner-occupier 30.7 36.4 0.93 0.91–0.95
Room category (p < 0.01)
regular (ref.) 32.4 40.1 1.00  
 semi-private/private 31.1 32.2 1.04 1.01–1.07
Marital status (p < 0.001)
married (ref.) 32.4 37.1 1.00  
 never married 33.1 42.9 1.04 0.99–1.08
 widowed 30.0 37.9 1.03 1.00–1.06
 divorced 38.4 44.9 1.12 1.07–1.17
Nationality (p < 0.001)
Swiss (ref.) 31.4 37.8 1.00  
 foreign 39.8 45.1 1.09 1.04–1.14
Language region (p < 0.001)
German (ref.) 27.6 34.1 1.00  
 French 42.1 46.5 1.36 1.32–1.40
 Italian 37.3 34.8 1.22 1.16–1.29
Nursing home bed densitya (p > 0.001)    0.96 0.95–0.97
  1. IRR incidence rate ratios,  95 % CI = 95 % confidence interval, p-values from likelihood ratio tests
  2. a = average number of nursing home beds per 100 habitants aged 65 years and older (per 106 regions)
  3. Data source: Swiss Federal Statistical Office, MedStat, SNC