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Table 1 Baseline characteristics of the 2 case control groups

From: Mid-long-term results of total knee arthroplasty followed by ipsilateral total hip arthroplasty versus total hip arthroplasty subsequent to ipsilateral total knee arthroplasty: a case-control analysis

Parameters

THA-TKA group

TKA-THA group

P value

n = 28

n = 28

Gender (male/female)

3/25

3/25

1.000c

Age (yr)

57.3 ± 10.6

58.8 ± 10.2

0.610a

Body mass index (kg/m2)

22.3 (20.2–24.9)

22.2 (19.4–24.8)

0.928b

ASA (I-II/III-IV)

19/9

22/6

0.547c

No. of diseases (RA/OA)

17/11

17/11

1.000c

Varus/neutral/valgus/severe valgus

2/11/14/1

3/6/17/2

0.591c

THA follow-up (mo)

109.0 (100.3 to 120.3)

97.5 (82.3 to119.3)

0.095b

TKA follow-up (mo)

100.0 (88.8 to 111.0)

114.5 (94.3 to 134.3)

0.012b

Interval between surgery (mo)

11.0 (7.3 to 14.8)

15.0 (8.3 to 19.5)

0.061b

  1. ASA American Society of Anesthesiologists Scale, RA Rheumatoid arthritis, OA Osteoarthritis
  2. aStudent t test
  3. bMann-Whitney U test
  4. cFisher’s exact test