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Table 3 Cox proportional hazard regression analysis for mortality risk in the elderly patients

From: Chronic osteomyelitis increases long-term mortality risk in the elderly: a nationwide population-based cohort study

Cohort

Crude hazard ratio (95 % CI)

Adjusted hazard ratio (95 % CI)

Chronic osteomyelitis

 Yes

2.29 (2.02–2.59)*

1.89 (1.66–2.15)*

 No

1.000

1.000

Age (years)

 65–74

1.000

1.000

 75–84

1.74 (1.57–1.91)*

1.69 (1.53–1.87)*

 ≥85

1.76 (1.49–2.10)*

2.02 (1.70–2.41)*

Gender

 Male

1.36 (1.24–1.50)*

1.34 (1.22–1.48)*

 Female

1.000

1.000

Comorbidity

 DM

1.92 (1.73–2.14)*

1.71 (1.53–1.92)*

 HTN

1.53 (1.39–1.68)*

1.16 (1.05–1.29)*

 Renal disease

2.66 (2.19–3.24)*

2.03 (1.66–2.47)*

 Stroke

2.24 (1.97–2.56)*

1.82 (1.59–2.08)*

 CHF

2.61 (2.13–3.20)*

1.86 (1.51–2.29)*

 Liver disease

1.68 (1.37–2.05)*

1.47 (1.201.81)*

 Cancer

2.77 (2.32–3.31)*

2.41 (2.02–2.88)*

 COPD

2.25 (1.99–2.54)*

1.77 (1.56–2.01)*

Monthly income

 <NT$ 15,840

1.71 (1.08–2.68)*

1.50 (0.95–2.36)

 NT$ 15,840–25,000

1.34 (0.85–2.12)

1.27 (0.8–2.02)

 >NT$ 25,000

1.000

1.000

  1. *p-value < 0.05
  2. CI confidence interval, DM diabetes mellitus, HTN hypertension, CHF congestive heart failure, COPD chronic obstructive pulmonary disease, NT$ New Taiwan Dollars