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Table 1 Baseline information of participants

From: Association between calf circumference and incontinence in Chinese elderly

Variables

Male (n = 6516)

p

Female (n = 8473)

p

Not Incontinence

Incontinence

Not Incontinence

Incontinence

Total

n = 6175

n = 341

 < 0.001

n = 7769

n = 704

 < 0.001

Age in years, mean (sd)

82.69 (10.70)

93.43 (8.85)

 < 0.001

86.20 (11.90)

97.06 (7.49)

 < 0.001

Calf circumference1, cm

32.72 (5.84)

30.14 (6.81)

 < 0.001

29.88 (6.11)

26.64 (6.82)

 < 0.001

Calf circumference2, %

  

 < 0.001

  

 < 0.001

 ≥ 34 (Male) /33 (Female)

 < 34 (Male) /33 (Female)

2601 (42.11)

90 (26.39)

 

2196 (28.27)

89 (12.64)

 

3574 (57.89

251 (73.61)

 

5573 (71.73)

615 (87.36)

 

Calf circumference3, %

  

 < 0.001

  

 < 0.001

 ≥ 28.5 (Male) /26.5 (Female)

5080 (82.27)

206 (60.41)

 

5754 (74.06)

320 (45.45)

 

 < 28.5 (Male) /26.5 (Female)

1095 (17.73)

135 (39.59)

 

2015 (25.94)

384 (54.55)

 

Age group, %

  

 < 0.001

  

 < 0.001

60–70

770 (12.47)

4 (1.17)

 

772 (9.94)

2 (0.28)

 

71–80

1787 (28.94)

28 (8.21)

 

1765 (22.72)

24 (3.41)

 

81–90

1737 (28.13)

62 (18.18)

 

1910 (24.58)

79 (11.22)

 

91–100

1351 (21.88)

129 (37.83)

 

1668 (21.47)

199 (28.27)

 

 > 100

530 (8.58)

118 (34.60)

 

1654 (21.29)

400 (56.82)

 

Waist-to-Hip Ratio (WHR), %

  

0.033

  

 < 0.001

 < 0.9 (Male) /0.8 (Female)

2729 (44.19)

171 (50.15)

 

2792 (35.94)

356 (50.57)

 

 ≥ 0.9 (Male) /0.8 (Female)

3446 (55.81)

170 (49.85)

 

4977 (64.06)

348 (49.43)

 

Socioeconomic status, %

  

 < 0.001

  

 < 0.001

Poor

613 (10.02)

55 (16.42)

 

788 (10.25)

139 (20.26)

 

General

4144 (67.71)

224 (66.87)

 

5555 (72.26)

471 (68.66)

 

Good

1363 (22.27)

56 (16.72)

 

1345 (17.49)

76 (11.08)

 

Education level, %

  

 < 0.001

  

 < 0.001

Illiterate

1363 (26.45)

132 (41.90)

 

4489 (66.23)

505 (80.03)

 

Primary & Middle school

3030 (58.79)

137 (43.49)

 

1950 (28.77)

95 (15.06)

 

University and above

761 (14.77)

46 (14.60)

 

339 (5.00)

31 (4.91)

 

BMI, %

  

 < 0.001

  

 < 0.001

Emaciation

1616 (26.17)

184 (53.96)

 

2805 (36.11)

472 (67.05)

 

Normal

3800 (61.54)

123 (36.07)

 

3961 (50.98)

173 (24.57)

 

Overweight or obesity

759 (12.29)

34 (9.97)

 

1003 (12.91)

59 (8.38)

 

Pregnant history, %

  

/

  

0.509

Never

/

/

 

115 (1.70)

13 (2.06)

 

Equal or more than once

/

/

 

6654 (98.30)

619 (97.94)

 

Frequently eat fruits & vegetables, %

  

 < 0.001

  

 < 0.001

No

120 (1.95)

29 (8.53)

 

192 (2.48)

68 (9.69)

 

Yes

6033 (98.05)

311 (91.47)

 

7556 (97.52)

634 (90.31)

 

Smoking status, %

  

 < 0.001

  

0.291

No

2591 (42.56)

184 (54.44)

 

7000 (91.94)

631 (90.79)

 

Yes

3497 (57.44)

154 (45.56)

 

614 (8.06)

64 (9.21)

 

Drinking status, %

  

 < 0.001

  

0.579

No

3313 (54.59)

221 (65.77)

 

6765 (89.24)

615 (89.39)

 

Yes

2756 (45.41)

115 (34.23)

 

816 (10.76)

73 (10.61)

 

Exercise, %

  

 < 0.001

  

 < 0.001

No

3356 (55.21)

234 (70.27)

 

5022 (65.97)

548 (79.65)

 

Yes

2723 (44.79)

99 (29.73)

 

2590 (34.03)

140 (20.35)

 

Limited daily activities, %

  

 < 0.001

  

 < 0.001

No

4479 (72.72)

52 (15.29)

 

4866 (62.84)

72 (10.26)

 

Yes

1680 (27.28)

288 (84.71)

 

2878 (37.16)

630 (89.74)

 

Take dietary supplements, %

  

0.341

  

0.849

No

5482 (90.03)

298 (88.43)

 

6738 (87.96)

606 (88.21)

 

Yes

607 (9.97)

39 (11.57)

 

922 (12.04)

81 (11.79)

 

History of Fall, %

  

 < 0.001

   

No

4981 (81.94)

217 (64.97)

 

5784 (75.77)

452 (66.47)

 

Yes

1098 (18.06)

117 (35.03)

 

1850 (24.23)

228 (33.53)

 

Respiratory diseases history, %

  

 < 0.001

  

 < 0.001

No

5447 (88.21)

276 (80.94)

 

7196 (92.62)

629 (89.35)

 

Yes

728 (11.79)

65 (19.06)

 

573 (7.38)

75 (10.65)

 

Urinary disease history, %

  

 < 0.001

  

0.258

No

5612 (90.88)

281 (82.40)

 

7691 (99.00)

700 (99.43)

 

Yes

563 (9.12)

60 (17.60)

 

78 (1.00)

4 (0.57)

 

Stroke or cardiovascular disease history, %

  

 < 0.001

  

 < 0.001

No

5520 (89.39)

236 (69.21)

 

7112 (91.54)

573 (81.39)

 

Yes

655 (10.61)

105 (30.79

 

657 (8.46)

131 (18.61)

 

Nervous system disease history, %

  

 < 0.001

  

 < 0.001

No

6075 (98.38)

285 (83.58)

 

7600 (97.82)

573 (81.39)

 

Yes

100 (1.62)

56 (16.42)

 

169 (2.18)

131 (18.61)

 
  1. Continuous normal distribution data were described by mean \((\)standard deviations), and Student’s t-tests were used for comparison between groups. The categorized data were described by numbers (%), and were compared using the Chi-squared test
  2. Calf circumference1: Take calf circumference as a continuous variable. Calf circumference2: The calf circumference is divided into two categories. The cut-off value is 34 cm for males, and 33 cm for females. Calf circumference3: The calf circumference is divided into two categories. The cut-off value is 28.5 cm for males, and 26.5 cm for females