Prevalence and factors associated with knee osteoarthritis among middle-aged and elderly individuals in rural Tianjin: a population-based cross-sectional study

Table 5 Multivariate logistic regression of risk factors for knee osteoarthritis in men

Variables	Reference	OR	95% CI	P value
BMI	Normal
Over weight		1.347	0.885–2.050	0.165
Obesity		2.049	1.195–3.513	0.009
Sleep situation	Satisfy
Not bad		1.620	0.908–2.892	0.103
Insufficient		2.351	1.218–4.539	0.011
Education	Illiterate
Primary level		2.636	0.611–11.377	0.194
Elementary level		2.514	0.580–10.891	0.218
High school		3.473	0.767–15.721	0.106
≥ College		–	–	–
Age	< 55 years
55–64 years		2.460	1.471–4.115	0.001
65–74 years		2.102	1.177–3.755	0.012
≥ 75 years		4.258	1.691–10.725	0.002
Often walk	No
Yes		2.191	1.477–3.250	< 0.001

ISSN: 1749-799X