Table 3 ORs of risk factors for knee pain and clinical KOA (multivariable stepwise logistic regression)

 ≤ 1

1

NA

 2

0.95(0.80–1.13)

NA

 ≥ 3

1.12(0.96–1.31)

NA

 No

1

NA

 < 9

1.32(1.09–1.59)*

NA

 9–17

1.46(1.18–1.80)*

NA

 ≥ 17

1.47(1.12–1.93)*

NA

History of HT

1.52(1.16–1.98)*

1.66(1.12–2.48)*

Contraceptives use

1.14(1.01–1.29)*

1.26(1.02–1.55)*

Age (years)

1.01(1.00–1.02)*

1.04(1.03–1.05)*

BMI (kg/m²)

1.08(1.06–1.09)*

1.09(1.07–1.12)*

Shift work

1.28(1.16–1.41)*

NA