Skip to main content

Table 3 Adjusted for joint type and multivariable-adjusted hazard of each complication by current tobacco use status

From: Current tobacco use is associated with higher rates of implant revision and deep infection after total hip or knee arthroplasty: a prospective cohort study

Endpoint Current tobacco user Number of events 1 year (95 % CI) 2 years (95 % CI) HR (95 % CI)a p-value HR (95 % CI)b p-value
Any revision Yes 16 95.8 (93.4, 98.3) 93.6 (90.5, 96.8) 1.98 (1.14, 3.46) 0.02 1.78 (1.01, 3.13) 0.04
  No 111 98.2 (97.8, 98.6) 97.3 (96.7, 97.8) 1.0 (ref)   1.0 (ref)  
Deep infection Yes 10 98.1 (96.8, 99.4) 97.0 (94.9, 99.0) 2.45 (1.25, 4.79) 0.009 2.37 (1.19, 4.72) 0.01
  No 57 98.9 (98.6, 99.2) 98.7 (98.3, 99.0) 1.0 (ref)   1.0 (ref)  
Superficial infection Yes 4 99.0 (98.1, 100) 99.0 (98.1, 100) 1.06 (0.38, 2.98) 0.92 1.07 (0.37, 3.09) 0.90
  No 50 99.1 (98.8, 99.3) 99.1 (98.8, 99.3) 1.0 (ref)   1.0 (ref)  
Peri-prosthetic fracture Yes 10 98.2 (97.0, 99.4) 98.2 (97.0, 99.4) 0.84 (0.44, 1.58) 0.59 1.01 (0.53, 1.92) 0.97
  No 134 98.0 (97.6, 98.3) 97.7 (97.3, 98.2) 1.0 (ref)   1.0 (ref)  
  1. aCox models adjusted for knee (versus hip); bCox models adjusted for knee (versus hip), male (versus female), and age at surgery (per 1 year). Significant hazard ratios and p-values are in bold