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Table 1 Demographic data between the two groups

From: The effects of immediate programmed cryotherapy and continuous passive motion in patients after computer-assisted total knee arthroplasty: a prospective, randomized controlled trial

Demographics

All (N = 60)

Intervention group (n = 30)

Control group (n = 30)

p value

Age, year (SD)

.694

 40–50 years

2 (3.3)

1 (3.3)

1 (3.3)

 

 51–60 years

11 (18.3)

7 (23.3)

4 (13.3)

 

 61–70 years

21 (35.0)

10 (33.3)

11 (36.7)

 

 71–80 years

25 (41.7)

11 (36.7)

14 (46.7)

 

 81–90 years

1 (1.7)

1 (3.3)

0 (0.0)

 

Sex, n (%)

.519

 Male

12 (20.0)

7 (23.3)

5 (16.7)

 

 Female

48 (80.0)

23 (76.7)

25 (83.3)

 

Religion, n (%)

.511

 No religion

7 (11.7)

5 (16.7)

2 (6.7)

 

 Taoism

24 (40.0)

13 (43.3)

11 (36.7)

 

 Buddhism

24 (40.0)

9 (30.0)

15 (50.0)

 

 Christian

3 (5.0)

2 (6.7)

1 (3.3)

 

 Others

2 (3.3)

1 (3.3)

1 (3.3)

 

Education, n (%)

.911

 Un literate

25 (41.7)

13 (43.3)

12 (40.0)

 

 Elementary school

20 (33.3)

10 (33.3)

10 (33.3)

 

 Middle school

7 (11.7)

3 (10.0)

4 (13.3)

 

 High school

4 (6.7)

2 (6.7)

2 (6.7)

 

 Specialist

3 (5.0)

1 (3.3)

2 (6.7)

 

 Above university

1 (1.7)

1 (3.3)

0 (0.0)

 

Past surgical history, n (%)

2 (3.3)

1 (3.3)

1 (3.3)

 

 No

15 (25.0)

7 (23.3)

8 (26.7)

 

 Yes

44 (73.7)

23 (76.7)

21 (70.0)

 

 Missing value

1 (1.7)

0 (0.0)

1 (3.3)

 

Anesthesia, n (%)

.301

 General

56 (93.3)

27 (90.0)

29 (96.7)

 

 Regional

4 (6.7)

3 (10.0)

1 (3.3)

 

Wound length, cm (SD)

14.2 (1.6)

13.9 (1.2)

14.5 (1.8)

.136

Drainage amount, ml (SD)

116 (59)

122 (66)

109 (52)

.387

Patient-controlled analgesia, n (%)

8 (13.3)

3 (10.0)

5 (16.7)

.448

The time of analgesics injection

 POD 1

1.0 (0.7)

0.9 (0.6)

1.2 (0.8)

.098

 POD 2

0.4 (0.6)

0.3 (0.5)

0.5 (0.6)

.064

 POD 3

0.1 (0.3)

0.03 (0.2)

0.2 (0.4)

.090

  1. POD postoperative day, SD standard deviation