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

Table A3b. Simple regression model between trends in individual risk factors and trends in stroke event rates
Period Risk factor Quality weighting Men Women
Coeff. (95% CI) % variation explained Coeff. (95% CI) % variation explained
Full Daily smoking No 0.000
(-0.02,0.02)
0 -0.004
(-0.04,0.03)
4
Yes 0.000
(-0.02,0.02)
0 -0.004
(-0.03,0.03)
4
Total cholesterol No -0.05
(-0.32,0.22)
2 0.14
(-0.16,0.44)
13
Yes 0.01
(-0.28,0.31)
10 0.17
(-0.11,0.46)
16
BMI No -0.12
(-0.28,0.04)
29 0.07
(-0.07,0.22)
17
Yes -0.11
(-0.30,0.08)
21 0.05
(-0.12,0.22)
9
Lagged Daily smoking No 0.000
(-0.03,0.03)
0 -0.006
(-0.06,0.05)
4
Yes 0.001
(-0.03,0.03)
0 -0.005
(-0.06,0.05)
3
Total cholesterol No -0.19
(-0.66,0.28)
8 0.14
(-0.39,0.67)
7
Yes -0.02
(-0.46,0.42)
10 0.28
(-0.24,0.80)
11
BMI No * * 0.13
(-0.15,0.40)
15
Yes -0.22
(-0.50,0.06)
35 0.09
(-0.23,0.40)
7

* Model can not be fitted