Table 2.

Logistic odds ratio (95% Confidence Intervals) for cognitive impairment and continuous measures of blood pressure among Chinese elderly.

Variables	Unadjusted	Basic model‡	Final model§
Each 1mmHg lower in participants with SBP <141mmHg (n=4733)	1.014(1.009–1.019) †	1.008(1.003–1.014) †	1.007(1.002–1.013) †
Each 1mmHg higher in participants with SBP ≥141mmHg ( n=2411)	1.012(1.006–1.017) †	1.010(1.004–1.017) †	1.012(1.005–1.019) †
Each 1mmHg lowerin participants with DBP<85mmHg (n=5180)	1.023(1.015–1.030) †	1.011(1.003–1.019) †	1.011(1.003–1.020)*
Each 1mmHg higherin participants with DBP ≥85mmHg (n=1964)	1.018(1.007–1.028) †	1.021(1.009–1.033) †	1.018(1.006–1.030) †
Each 1mmHg lower in participants with PP<62mmHg (n=5111)	1.013(1.007–1.20) †	1.008(1.001–1.015)*	1.008(1.000–1.015)*
Each 1mmHg higherin participants with PP≥62mmHg (n=2033)	1.009(1.002–1.017)*	1.002(0.994–1.011)	1.005(0.996–1.013)
Each 1mmHg lower in participants with MAP<103mmHg (n=4792)	1.022(1.014–1.029) †	1.012(1.004–1.021) †	1.011(1.003–1.020)*
Each 1mmHg higher in participants with MAP≥103mmHg (n=2352)	1.021(1.012–1.030) †	1.022(1.012–1.033) †	1.021(1.011–1.032) †

^*p<0.05

^†p<0.01.

^‡Adjusted for demographic variables including age (year), gender, education level (year), residence in basic model,

^§Further adjusted physical activity, vision, waist circumference, type 2 diabetes mellitus, cardiovascular diseases and stroke and cerebrovascular diseases in final model.

DBP diastolic blood pressure; MAP mean arterial pressure, PP pulse pressure, SBP systolic blood pressure.