Table 1.

Longitudinal relationships of own and spouse lower cognitive function at baseline with lower cognitive function outcomes for husbands and wives at follow-up (n = 378 spouse pairs)

1994 baseline variables	1999 husbands' and wives' lower cognitive function outcomes
	model adjusting for gendera		stratified models for husbands and wives
	baseline relationships with husbands' and wives' lower cognitive function outcomes		baseline relationships with wives' lower cognitive function outcomes		baseline relationships with husbands' lower cognitive function outcomes
	coeff.	95% CI	coeff.	95% CI	coeff.	95% CI
Male sex	0.08	−0.14 to 0.30		–		–
Age	0.02∗∗	0.01–0.03	0.00	−0.02 to 0.02	0.03∗∗	0.01–0.05
Chronic conditions	0.14∗	0.03–0.26	0.11	−0.04 to 0.25	0.19∗	0.02–0.36
Financial problems	0.32	−0.11 to 0.75	0.22	−0.26 to 0.71	0.30	−0.28 to 0.89
Own lower cognitive function	0.63∗∗∗	0.55–0.71	0.59∗∗∗	0.50–0.67	0.66∗∗∗	0.58–0.75
Spouse lower cognitive function	0.06	−0.01 to 0.12	0.12∗∗	0.05–0.19	−0.01	−0.10 to 0.08
Model R2	a		0.40		0.45

Regression coefficients (coeff.) and confidence intervals (95% CI) are based upon a 1-point increase in the indicated baseline independent variable.

^∗p < 0.05

^∗∗p < 0.01

^∗∗∗p < 0.001.

^aThis model uses Liang and Zeger's general estimating equations [18] to adjust for paired data. R² is not available.