Table 1 Comparison of characteristics of patients with and without current tobacco use assessment among patients who underwent primary THA or TKA

Knee

4,277 (94.5 %)

249 (5.5 %)

0.93 (0.76, 1.12)

0.44

Hip

3,649 (94.9 %)

197 (5.1 %)

1.0 (ref)

Male

3516 (94.1)

219 (5.9)

0.82 (0.68, 0.99)

0.04

Female

4410 (95.1)

227 (4.9)

1.0 (ref) ^a

Age ≤60

2430 (93.8)

161 (6.2)

1.0 (ref) ^a

 61–70

2522 (94.2)

154 (5.8)

1.10 (0.88, 1.39)

0.40

 71–80

2226 (95.5)

104 (4.5)

1.44 (1.12, 1.86)

0.005

 >80

748 (96.5)

27 (3.5)

1.86 (1.22, 2.81)

0.004

BMI < 25

1177 (95.4)

57 (4.6)

1.0 (ref) ^a

 25–29

2418 (94.4)

144 (5.6)

0.82 (0.60, 1.12)

0.21

 30–34

2169 (95.2)

109 (4.8)

0.97 (0.70, 1.35)

0.86

 35–39

1235 (94.4)

73 (5.6)

0.83 (0.58, 1.18)

0.30

 ≥40

889 (93.8)

59 (6.2)

0.74 (0.50, 1.08)

0.12

Cemented

2309 (94.6)

133 (5.4)

1.12 (0.71, 1.76)

0.62

Antibiotic/vacuum

2502 (94.6)

142 (5.4)

1.12 (0.74, 1.71)

0.59

No cement

3115 (94.8)

171 (5.2)

1.0 (ref) ^a

Charlson Index = 0

3734 (94.6)

212 (5.4)

1.0 (ref) ^a

>0

4192 (94.7)

234 (5.3)

1.02 (0.84, 1.24)

0.81

ASA = 1

231 (95.4)

11 (4.6)

1.0 (ref) ^a

 2

5455 (94.8)

298 (5.2)

0.89 (0.48, 1.64)

0.70

 3

2195 (94.3)

133 (5.7)

0.80 (0.43, 1.51)

0.49

 4

42 (91.3)

4 (8.7)

0.51 (0.15, 1.66)

0.26