Table C.1IPTW vs standard regression models for CSA predicting risk of probable cognitive impairment in 2014 (wave 7).

Year of	Employment		Volunteering		Internet Use		Social Club		Newspaper Reading		Evening Classes
Exposure	RR (95% CI)	P > z	RR (95% CI)	P > z	RR (95% CI)	P > z	RR (95% CI)	P > z	RR (95% CI)	P > z	RR (95% CI)	P > z
IPTW
W2/2004	0.94 (0.79–1.12)	0.466	0.65 (0.42–1.01)	0.055	0.66 (0.52–0.84)	0.001	0.91 (0.71–1.17)	0.46	0.96 (0.82–1.11)	0.575	0.82 (0.56–1.21)	0.315
W3/2006	0.90 (0.74–1.10)	0.298	0.63 (0.41–0.98)	0.042	0.65 (0.52–0.81)	< 0.001	1.09 (0.85–1.41)	0.481	0.96 (0.82–1.11)	0.554	0.83 (0.54–1.26)	0.376
W4/2008	0.89 (0.71–1.12)	0.322	0.63 (0.40–0.98)	0.039	0.62 (0.50–0.77)	< 0.001	0.96 (0.73–1.26)	0.768	0.97 (0.83–1.13)	0.712	0.79 (0.52–1.19)	0.257
W5/2010	0.89 (0.68–1.15)	0.361	0.52 (0.30–0.88)	0.015	0.67 (0.54–0.82)	< 0.001	0.92 (0.69–1.22)	0.564	0.97 (0.83–1.13)	0.694	1.07 (0.73–1.57)	0.736
W6/2012	0.97 (0.72–1.30)	0.816	0.56 (0.34–0.94)	0.026	0.69 (0.56–0.85)	< 0.001	0.81 (0.60–1.08)	0.151	0.95 (0.82–1.11)	0.53	0.72 (0.48–1.09)	0.121
Standard
W2/2004	1.05 (0.90–1.24)	0.523	0.99 (0.84–1.16)	0.877	0.74 (0.61–0.89)	0.001	1.07 (0.90–1.27)	0.458	0.89 (0.78–1.02)	0.1	0.89 (0.68–1.17)	0.411
W3/2006	0.98 (0.81–1.18)	0.843	0.84 (0.70–1.01)	0.061	0.78 (0.65–0.94)	0.009	1.14 (0.95–1.37)	0.162	0.98 (0.87–1.12)	0.81	0.85 (0.61–1.18)	0.337
W4/2008	0.90 (0.73–1.11)	0.327	0.80 (0.66–0.98)	0.029	0.72 (0.60–0.86)	< 0.001	0.97 (0.79–1.19)	0.796	1.01 (0.88–1.16)	0.911	0.90 (0.65–1.25)	0.524
W5/2010	0.88 (0.69–1.12)	0.304	0.73 (0.59–0.91)	0.005	0.64 (0.54–0.77)	< 0.001	0.87 (0.72–1.05)	0.147	0.91 (0.79–1.06)	0.222	0.99 (0.76–1.30)	0.96
W6/2012	1.00 (0.78–1.30)	0.978	0.68 (0.55–0.85)	0.001	0.66 (0.56–0.79)	< 0.001	0.68 (0.54–0.86)	0.001	0.86 (0.74–0.99)	0.033	0.94 (0.79–1.08)	0.142