Table 3 Baseline determinants of persistent knee pain in women, univariate analyses of Gazel and Cosali cohorts

Age at baseline, in years

0.8944

0.1397

20-39

0

-

-

98

1.00 (.-.)

40-49

0

-

-

91

1.77 (1.00-3.16)

0.0517

50-59

324

1.00 (.-.)

72

1.47 (0.80-2.71)

0.2176

60-64

420

0.93 (0.68-1.26)

0.638

.

0

-

-

65-69

206

0.95 (0.66-1.38)

0.7949

.

0

-

-

BMI at baseline

.

0.0179

.

.

0.4198

Normal weight, missing

485

1.00 (.-.)

159

1.00 (.-.)

.

.

Overweight

317

1.40 (1.04-1.90)

0.028

74

1.12 (0.64-1.94)

0.6873

.

Obesity

148

1.62 (1.08-2.44)

0.0198

28

1.73 (0.76-3.93)

0.1896

Socio-professional category at 35 years/at baseline

0.4887

0.911

Executives, others, missing

111

1.00 (.-.)

12

1.00 (.-.)

Associates professionals or technicians

504

1.24 (0.81-1.90)

0.3314

44

1.28 (0.35-4.65)

0.7094

Employees

330

1.16 (0.74-1.81)

0.5269

128

1.36 (0.41-4.50)

0.6178

Manual workers

5

0.39 (0.06-2.44)

0.3145

77

1.51 (0.44-5.19)

0.5096

Carrying/Handling heavy loads**

0.4154

0.4789

None, missing

822

1.00 (.-.)

187

1.00 (.-.)

Short or moderate exposure

99

1.04 (0.66-1.62)

0.8782

47

1.39 (0.73-2.65)

0.3123

Long or severe exposure

29

0.61 (0.29-1.28)

0.1921

27

1.41 (0.62-3.17)

0.4103

Carrying/Handling heavy loads**

0.6448

0.225

No, missing

822

1.00 (.-.)

187

1.00 (.-.)

Yes

128

0.91 (0.62-1.35)

0.6448

74

1.40 (0.81-2.40)

0.225

Kneeling

0.8991

0.8211

None, missing

901

1.00 (.-.)

106

1.00 (.-.)

Short or moderate exposure

40

1.18 (0.59-2.35)

0.6446

96

0.85 (0.49-1.48)

0.564

Long or severe exposure

9

1.01 (0.25-4.06)

0.9907

59

1.00 (0.53-1.88)

0.9906

Kneeling

0.6746

0.6851

No, missing

901

1.00 (.-.)

106

1.00 (.-.)

Yes

49

1.14 (0.61-2.13)

0.6746

155

0.90 (0.55-1.48)

0.6851

Carrying/Handling heavy loads * Kneeling

0.4537

0.785

<= short or moderate exposure, missing

915

1.00 (.-.)

187

1.00 (.-.)

One long or severe exposure

32

0.63 (0.31-1.29)

0.2087

.

62

1.23 (0.69-2.18)

0.4873

Both long or severe exposure

3

0.99 (0.09-10.91)

0.9904

.

12

1.08 (0.34-3.46)

0.9000

Walking up more than 10 flights of stairs

0.4544

None, missing

922

1.00 (.-.)

Short exposure

20

1.50 (0.54-4.18)

0.4331

Long exposure

8

0.50 (0.12-2.02)

0.3316

Sick leave for depression

0.7561

No

576

1.00 (.-.)

Yes

374

0.96 (0.73-1.26)

0.7561

Pain intensity

<.0001

.

.

0.0057

Low, missing

515

1.00 (.-.)

61

1.00 (.-.)

.

.

High

435

1.91 (1.44-2.52)

<.0001

64

2.58 (1.25-5.33)

0.0106

.

No presentpain

136

0.96 (0.53-1.77)

0.9083

.

Past history of knee injuries

0.0655

No, missing

652

1.00 (.-.)

.

Yes

298

1.32 (0.98-1.78)

0.0655

Self-assessed origin of knee pain

0.0091

Degenerative osteoarthritis

543

1.43 (1.06-1.92)

0.0183

.

Other

305

1.00 (.-.)

.

.

Not completed

102

0.82 (0.52-1.29)

0.3909

.

Pain in other areas at baseline

0.0012

0.1205

No pain

69

1.00 (.-.)

.

8

1.00 (.-.)

Hip pain

345

2.67 (1.58-4.52)

0.0003

107

0.77 (0.17-3.37)

0.7243

Pain in other areas

536

2.14 (1.29-3.55)

0.0032

146

0.47 (0.11-2.03)

0.3112