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Table 1 Baseline characteristics of participants

From: Acupuncture for knee osteoarthritis with sensitized acupoints: results from a pilot, feasibility randomized controlled trial

Variables

High-sensitization group (n = 18)

Low/non-sensitization group (n = 18)

p

Age, median (first and third quartiles), year

54.00 (51.50–60.25)

59.50 (51.50–66.25)

0.23#

Sex, n (%)

  

1.00†

 Women

17 (94.4)

16 (88.9)

 

 Man

1 (5.6)

2 (11.1)

 

Marital status, n (%)

  

1.00†

 Married

18 (100.0)

17 (94.4)

 

 Single

0 (0.0)

1 (5.6)

 

Height, median (first and third quartiles), cm

155.5 (152.00–160.75)

158.00 (155.00–160.00)

0.46#

Weight, median (first and third quartiles), kg

55.00 (52.75–60.25)

57.50 (51.50–66.00)

0.54#

BMI, median (first and third quartiles), kg/m2

23.30 (21.25–25.83)

23.14 (20.52–27.07)

0.67#

Education level, n (%)

  

0.41†

 Illiteracy

1 (5.6)

2 (11.1)

 

 Primary school

1 (5.6)

1 (5.6)

 

 High school

5 (27.8)

10 (55.6)

 

 University

9 (50.0)

4 (22.2)

 

 Postgraduate

1 (5.6)

1 (5.6)

 

 Missing

1

0

 

Duration of education, median (first and third quartiles), year

9.50 (8.00–12.5)

9.00 (6.00–12.00)

0.25#

Symptom duration, median (first and third quartiles), year

4.50 (1.25–12.00)

5.00 (1.00–8.50)

0.61#

Symptom duration, n (%)

  

1.00†

< 1 year

4 (22.2)

4 (22.2)

 

1 to < 5 years

6 (33.3)

5 (27.8)

 

5 to < 10 years

4 (22.2)

5 (27.8)

 

≥ 10 years

4 (22.2)

4 (22.2)

 

Target knees, n (%)

  

0.06†

 Unilateral

5 (29.4)

11 (61.1)

 

 Bilateral

12 (70.6)

7 (38.9)

 

Severe side of the bilateral knees

  

0.66†

 Left

5 (41.7)

2 (28.6)

 

 Right

7 (58.3)

5 (71.4)

 

Kellgren criteria, n (%)

  

0.43†

 Kellgren 1

10 (58.8)

7 (41.2)

 

 Kellgren 2

6 (46.2)

7 (53.8)

 

 Kellgren 3

1 (20.0)

4 (80.0)

 

 Kellgren 4

0 (0)

0 (0)

 

 Missing

1

  

Previous pharmaceutical treatment, n (%)

   

 Chinese medicine

3 (16.7)

4 (22.2)

1.00†

 Calcium tablet

6 (33.3)

6 (33.3)

1.00†

 Glucosamine products

4 (22.2)

4 (22.2)

1.00†

 NSAIDs

1 (5.6)

0 (0)

1.00†

 Others

0 (0)

2 (11.1)

0.49†

Previous acupuncture treatment, n (%)

1 (5.6)

7 (38.9)

0.04†

Frequency of acupuncture treatment, median (first and third quartiles)

10 (0)

5 (8)

0.57#

WOMAC Index, median (first and third quartiles)

   

 WOMAC total

49.85 (19.25–69.13)

49.05 (21.03–102.85)

0.84#

 WOMAC pain

10.00 (5.50–21.68)

12.65 (6.60–19.98)

0.94#

 WOMAC stiffness

2.40 (1.08–8.65)

5.30 (0.83–8.88)

0.58#

 WOMAC function

31.00 (12.50–46.43)

31.30 (12.98–68.23)

0.82#

SF-12 Index, median (fi rst and third quartiles)

   

 Physical health

35.90 (27.11–42.05)

38.54 (25.91–44.44)

0.65#

 Mental health

53.74 (47.45–56.68)

45.89 (37.66–56.20)

0.10#

Active range of motion, median (first and third quartiles)

   

 Flexion

115.50 (109.50–132.50)

112.00 (104.50–125.00)

0.14#

 Extension

0 (0)

0 (0)

0.79#

 Internal rotation

20.00 (15.75–30.25)

19.00 (12.75–26.00)

0.39#

 External rotation

28.00 (24.50–30.25)

25.50 (20.00–31.50)

0.72#

Passive range of motion, median (first and third quartiles)

   

 Flexion

127.00 (121.75–145.00)

125.50 (110.25–135.00)

0.17#

 Extension

0 (0)

0 (0)

NA

 Internal rotation

29.00(24.25–35.00)

25.50 (22.00–31.75)

0.46#

 External rotation

35.00 (28.25–36.50)

31.00 (24.00–37.25)

0.39#

  1. Others including cervus and cucumis polypeptide injection and diacerein capsules
  2. NSAIDs nonsteroidal anti-inflammatory drugs, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index, NA not applicable
  3. #Mann-Whitney U rank sum test
  4. †Fisher’s exact test