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Table 2 Odds ratios (OR) of individual associated factors with symptomatic knee osteoarthritis by sex

From: Prevalence and associated factors of knee osteoarthritis in a rural Chinese adult population: an epidemiological survey

Associated factor

Women

Men

 

n

Case (%)

OR

n

Case (%)

OR

Age

 40~

730

70 (9.59)

1

440

40 (9.09)

1

 50~

516

89 (17.25)

1.97 (1.40–2.75)

497

96 (19.32)

2.39 (1.61–3.55)

 60~

415

89 (21.45)

2.57 (1.83–3.62)

554

111 (20.04)

2.51 (1.70–3.69)

  ≥ 70

106

31 (29.25)

3.90 (2.40–6.33)

170

42 (24.71)

3.28 (2.04–5.28)

Overweight

 No

967

134 (13.86)

1

950

163 (17.16)

1

 Yes

800

145 (18.13)

1.35 (1.05–1.74)

711

126 (17.72)

1.04 (0.80–1.34)

Central adiposity

 No

1193

116 (9.72)

1

1207

202 (16.74)

1

 Yes

574

115 (20.03)

1.53 (1.18–1.99)

454

87 (19.16)

1.18 (0.89–1.56)

High LDLC

      

 NO

1656

252 (15.22)

1

1558

266 (17.07)

1

 Yes

111

27 (24.32)

1.79 (1.14–2.82)

103

23 (22.33)

1.40 (1.06–2.26)

High TC

 NO

1568

239 (15.24)

1

1493

256 (17.15)

1

 Yes

199

42 (21.11)

1.44 (1.00–2.08)

168

33 (19.64)

1.18 (0.79–1.77)

High TG

 NO

1518

228 (15.02)

1

1391

247 (17.76)

1

 Yes

249

53 (21.29)

1.49 (1.07–2.08)

270

42 (15.56)

0.85 (0.60–1.22)

Low HDL

      

 NO

1457

236 (16.20)

1

1250

237 (18.96)

1

 Yes

310

54 (17.41)

0.84 (0.66–1.32)

411

68 (16.55)

0.65 (0.44–1.25)

Dyslipidemia

 NO

1181

169 (14.31)

1

1024

191 (18.65)

1

 Yes

586

111 (18.94)

1.40 (1.08–1.82)

637

98 (15.38)

0.79 (0.61–1.04)

Hypertension

 No

903

122 (13.51)

 

652

92 (14.11)

 

 Yes

864

157 (18.17)

1.42 (1.10–1.84)

1009

197 (19.52)

1.48 (1.13–1.93)

Diabetes

 No

1639

257 (15.68)

 

1539

270 (17.54)

 

 Yes

128

22 (17.19)

1.12 (0.69–1.80)

122

19 (15.57)

0.87 (0.52–1.44)

Hyperuricemia

 No

1603

251 (15.66)

 

1412

247 (17.49)

 

 Yes

164

28 (17.07)

1.11 (0.72–1.70)

249

42 (16.87)

0.96 (0.67–1.37)

Low income

 NO

1571

238 (15.15)

 

1453

239 (16.45)

 

 Yes

196

43 (21.94)

1.54 (1.06–2.19)

208

50 (24.04)

1.61 (1.14–2.27)

Often walk

 No

1545

242 (15.66)

 

1444

241 (16.69)

1

 Yes

222

37 (16.67)

1.08 (0.74–1.57)

217

48 (22.12)

1.42 (1.00–2.01)

Smoke

 Nonsmoker

   

487

92 (18.89)

1

  < 10 per/day

   

241

46 (19.09)

0.91 (0.71–1.34)

 10 ~ per/day

   

405

72 (17.78)

0.82 (0.66–1.21)

 20 ~ per/day

   

528

67 (12.69)

0.62 (0.45–0.86)

Oral Contraceptive Users

 No

1644

263 (16.00)

1

0

  

 Yes

123

16 (13.01)

0.79 (0.46–1.35)

0

  
  1. LDLC low-density lipoprotein cholesterol, TC total cholesterol, TG triglycerides, HDL high density lipoprotein