Do trends in population levels of blood pressure and other cardiovascular risk factors explain trends in stroke event rates? - methodological appendix

Table A3a. Sensitivity analysis for simple regression model between trends in systolic blood pressure and trends in stroke event rate
Period Quality weighting Excluding Men Women
Coeff. 
(95% CI)		 % variation explained Coeff. 
(95% CI)		 % variation explained
Full No Nothing 0.00
(-0.02,0.02)		 0 0.02
(-0.01,0.04)		 23
Populations with low quality 0.01
(-0.02,0.03)		 3 0.02
(-0.02,0.05)		 14
Yes SAH 0.00
(-0.04,0.02)		 0 0.02
(-0.01,0.05)		 18
< 55 years old 0.00
(-0.02,0.01)		 5 0.02
(-0.01,0.05)		 36
Lagged No Nothing -0.01
(-0.04,0.02)		 4 0.04
(0.00,0.08)		 41
Populations with low quality * * 0.02
(-0.03,0.07)		 17
Yes SAH 0.00
(-0.04,0.04)		 0 0.04
(-0.01,0.09)		 28
< 55 years old * * 0.03
(-0.02,0.09)		 29

* Model cannot be fitted