Table 4.

Crude estimates and adjusted estimates of independent risk factors and protective factors for cognitive dysfunction.

	Crude estimates			Adjusted estimates
Variations	P	OR	95% CI	P	OR	95% CI
Intervention	0.024	0.262	0.079–0.870	0.032	0.155	0.028–0.855
Age	0.150	1.086	0.971–1.216	0.241	1.076	0.952–1.216
Education	0.182	0.858	0.686–1.074	0.191	0.855	0.675–1.082
Surgery	0.514	1.010	0.979–1.043	0.233	0.973	0.931–1.018
duration