| |
Low back pain (+) (n = 3726)
|
Low back pain (−) (n = 165,880)
|
p valuea
|
|---|
|
Age (years)
|
|
40–49
|
1478
|
39.7
|
79,296
|
47.8
|
< 0.001
|
|
50–59
|
1455
|
39.0
|
60,493
|
36.5
|
|
60–64
|
793
|
21.3
|
26,091
|
15.7
|
|
Height (cm)
|
169.1 (6.6)
|
169.1 (6.4)
|
0.486
|
|
Weight (kg)
|
69.3 (12.0)
|
68.5 (11.6)
|
< 0.001
|
|
Body mass index (kg/m2)
|
|
< 18.5
|
129
|
3.5
|
6029
|
3.6
|
< 0.001
|
|
18.5–24.9
|
2261
|
60.7
|
105,600
|
63.7
|
|
≥ 25
|
1336
|
35.8
|
54,251
|
32.7
|
|
Physical activity (min/day)
|
|
≥ 60
|
1244
|
33.4
|
56,939
|
34.3
|
0.233
|
|
< 60
|
2482
|
66.6
|
108,941
|
65.7
|
|
Smoking status
|
|
None
|
1249
|
33.5
|
56,805
|
34.2
|
< 0.001
|
|
Former
|
813
|
21.8
|
30,712
|
18.5
|
|
Current
|
1664
|
44.7
|
78,363
|
47.2
|
|
Alcohol intake
|
|
None
|
1085
|
29.1
|
47,372
|
42.5
|
0.054
|
|
Sometimes
|
1010
|
27.1
|
47,955
|
28.9
|
|
Everyday
|
1631
|
43.8
|
70,553
|
28.6
|
|
LDL-C (mg/dL)
|
|
Normal (< 140)
|
2605
|
69.9
|
117,219
|
70.7
|
0.320
|
|
High (≥ 140)
|
1121
|
30.1
|
48,661
|
29.3
|
|
HDL-C (mg/dL)
|
|
Normal (≥ 40)
|
3294
|
88.4
|
151,118
|
91.1
|
< 0.001
|
|
Low (< 40)
|
432
|
11.6
|
14,762
|
8.9
|
|
LDL-C/HDL-C ratio
|
|
Low (< 2.5)
|
2178
|
58.5
|
102,889
|
62.0
|
< 0.001
|
|
High (≥ 2.5)
|
1548
|
41.5
|
62,991
|
38.0
|
- Data are presented as number and percentage, or mean (standard deviation)
- LDL-C: Low-density lipoprotein-cholesterol, HDL-C: High-density lipoprotein-cholesterol
- aPearson chi-square test or unpaired t test
