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Table 1 Baseline characteristics of the patients initially operated and those responding to MOXFQ (all and by BMI category)

From: The effect of BMI on long-term outcomes after operatively treated ankle fractures: a study with up to 16 years of follow-up

 

Operated

Responders all

Normal weight

Overweight

Obese

Patients

2055

478

226

170

82

Age (years), mean (SD)

49.2 (± 18.3)

48.1 (± 15.5)

46.6 (± 16.2)

49.1 (± 15)

49.9 (± 14.2)

Men (%)

1036 (50.4)

248 (51.9)

116 (51.3)

93 (54.7)

39 (47.6)

Lifestyle factors

  BMI (kg/m2), mean (SD)

26.2 (± 4.9)

26.1 (± 4.5)

22.4 (± 1.8)

27.4 (± 1.4)

33.5 (± 3.1)

BMI by category (%)

  Normal weight (18.5–24.9)

887 (45.4)

226 (47.3)

   

  Overweight (25–29.9)

691 (35.3)

170 (35.6)

   

  Obese (≥ 30)

377 (19.3)

82 (17.2)

   

Smoking status (%)

  Current smoker

710 (34.5)

145 (30.3)

74 (32.7)

55 (32.3)

16 (19.5)

  Former smoker

164 (8.0)

40 (8.4)

12 (5.3)

15 (8.8)

13 (15.9)

  Never smoked

898 (43.7)

237 (49.6)

110 (48.7)

79 (46.5)

48 (58.5)

  Not known if ever smoked

283 (13.8)

56 (11.7)

30 (13.3)

21 (12.4)

5 (6.1)

Comorbidities

  Diabetes (%)

150 (7.4)

25 (5.2)

6 (2.7)

9 (5.3)

10 (12.2)

ASA score (%)

  I

699 (34.1)

194 (40.6)

109 (48.2)

72 (42.4)

13 (15.9)

  II

1137 (55.5)

273 (57.1)

116 (51.3)

91 (53.5)

66 (80.5)

  III

213 (10.4)

9 (1.9)

1 (0.4)

6 (3.5)

2 (2.4)

  Missing

6 (0.3)

2 (0.4)

0

1 (0.6)

1 (1.2)

Fracture characteristics

  Right side (%)

1103 (53.8)

250 (52.3)

119 (52.7)

93 (54.7)

38 (46.3)

  Open fracture (%)

157 (7.7)

30 (6.3)

17 (7.5)

10 (5.9)

3 (3.7)

  Displaced fracture (%)

683 (36.6)

172 (36.0)

75 (33.2)

60 (35.3)

37 (45.1)

Danis-Weber classification (%)

  A

48 (2.3)

10 (2.1)

6 (2.7)

3 (1.8)

1 (1.2)

  B

1492 (72.6)

334 (69.9)

155 (68.6)

120 (70.6)

59 (72.0)

  C

410 (20.0)

119 (24.9)

54 (23.9)

44 (25.9)

21 (25.6)

  Non-classifiable

105 (5.1)

15 (3.1)

11 (4.9)

3 (1.8)

1 (1.2)

Number fractured malleoli (%)

  Unimalleolar

1110 (54.0)

257 (53.8)

128 (56.6)

88 (51.8)

41 (50.0)

  Bimalleolar

511 (24.9)

104 (21.8)

44 (19.5)

40 (23.5)

20 (24.4)

  Trimalleolar

433 (21.1)

116 (24.3)

53 (23.5)

42 (24.7)

21 (25.6)

  Missing

1 (0)

1 (0.2)

1 (0.4)

0

0

Type of accident (%)

  Simple fall

1303 (63.4)

289 (60.5)

130 (57.5)

102 (60.0)

57 (69.5)

  Transportation

332 (16.2)

94 (19.7)

46 (20.4)

35 (20.6)

13 (15.9)

  Sports

293 (14.3)

67 (14)

35 (15.5)

25 (14.7)

7 (8.5)

  Other

127 (6.2)

28 (5.9)

15 (6.6)

8 (4.7)

5 (6.1)