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Table 3 Comparison of characteristics between participants with and without low back pain among women

From: Association between serum lipids and low back pain among a middle-aged Japanese population: a large-scale cross-sectional study

 

Low back pain (+) (n = 1889)

Low back pain (−) (n = 86,872)

p valuea

Age (years)

 40–49

626

33.1

39,403

45.4

<  0.001

 50–59

863

45.7

34,049

39.2

 60–64

400

21.2

13,420

15.4

Height (cm)

156.9 (6.5)

157.2 (6.3)

0.062

Weight (kg)

57.7 (10.8)

55.7 (10.3)

<  0.001

Body mass index (kg/m2)

 <  18.5

138

7.3

9474

10.9

<  0.001

 18.5–24.9

1200

63.5

58,904

67.8

 ≥ 25

551

29.2

18,494

21.3

Physical activity (min/day)

 ≥ 60

643

34.0

26,810

30.9

0.003

 <  60

1246

66.0

60,062

69.1

Smoking status

 None

1327

70.2

64,220

73.9

0.001

 Former

149

7.9

5735

6.6

 Current

413

21.9

16,917

19.5

Alcohol intake

 None

1099

58.2

49,307

56.7

0.250

 Sometimes

521

27.6

24,037

27.7

 Everyday

269

14.2

13,528

15.6

LDL-C (mg/dL)

 Normal (<  140)

1278

67.7

62,129

71.5

<  0.001

 High (≥ 140)

611

32.3

24,743

28.5

HDL-C (mg/dL)

 Normal (≥ 40)

1828

96.8

85,092

98.0

<  0.001

 Low (<  40)

61

3.3

1780

2.0

LDL-C/HDL-C ratio

 Low (<  2.5)

1398

74.0

69,350

79.8

<  0.001

 High (≥ 2.5)

491

26.0

17,522

20.2

  1. Data are presented as number and percentage, or mean (standard deviation)
  2. LDL-C: Low-density lipoprotein-cholesterol, HDL-C: High-density lipoprotein-cholesterol
  3. a Person chi-square test or unpaid t test