Skip to main content

Table 1 The demographic characteristics of the patients who underwent routine primary TKA

From: Closed suction drainage following routine primary total joint arthroplasty is associated with a higher transfusion rate and longer postoperative length of stay: a retrospective cohort study

Baseline characteristic

Drain use (n = 4540)

No drain (n = 1785)

All (n = 6325)

Demographic characteristics

 Age (X ± S)

66.56 ± 8.79

66.68 ± 8.64

66.60 ± 8.75

 Female, N (%)

3613 (79.58%)

1358 (76.08%)

4971 (78.59%)

 BMI (kg/m2)

25.84 ± 5.48

25.04 ± 3.56

25.62 ± 5.02

 Diagnosis, N (%)

   

  OA

4241 (93.41%)

1683 (94.29%)

5924 (93.66%)

  Inflammatory arthritis

299 (6.59%)

102 (5.71%)

401 (63.40%)

Comorbidities, N (%)

 Hypertension

1351 (29.76%)

356 (19.94%)

1707 (26.99%)

 Type 2 diabetes

360 (7.93%)

73 (4.09%)

433 (6.85%)

 CHD

182 (4.01%)

35 (1.96%)

217 (3.43%)

 COPD

24 (0.53%)

10 (0.56%)

34 (0.54%)

  1. BMI body mass index, OA osteoarthritis, CHD coronary heart disease, COPD chronic obstructive pulmonary disease