Table 2.

Estimates of Fixed Effects for Physical Activity and Cognitive Decline as Modified by Sex

				95% Confidence Interval
	β	SE	p	Lower	Upper	Type III Test p
Intercept	118.48	1.12	<.001	116.28	120.68	<.001
Time (y)	0.06	0.06	.291	−0.06	0.18	.029
Time2	−0.04	0.01	<.001	−0.05	−0.03	.088
Physical activity (ref = mod–vig)						<.001
Sedentary	−5.14	1.25	<.001	−7.59	−2.69
Light	−0.36	0.39	.362	−1.13	0.41
Physical activity × Time						.072
Sedentary × Time	−0.18	0.38	.624	−0.92	0.55
Light × Time	−0.69	0.16	<.001	−1.01	−0.38
Physical activity × Time2						.099
Sedentary × Time2	0.02	0.03	.565	−0.04	0.08
Light × Time2	0.05	0.02	.001	0.02	0.08
Less than HS educ	−2.65	0.18	<.001	−3.00	−2.30	<.001
Baseline age	−0.36	0.01	<.001	−0.39	−0.34	<.001
Male	−1.69	0.20	<.001	−2.08	−1.30	.005
No APOE e4 allele	0.51	0.19	.008	0.13	0.88	.008
Subjective health (ref = poor)						<.001
Excellent	2.56	0.40	<.001	1.78	3.34
Good	2.28	0.38	<.001	1.53	3.03
Fair	1.72	0.39	<.001	0.96	2.49
BMI (ref = obese)						.001
Underweight	−2.61	0.69	<.001	−3.96	−1.26
Normal weight	−0.00	0.25	.997	−0.50	0.50
Overweight	−0.20	0.25	.430	−0.69	0.30
Physical activity × Sex						.005
Sedentary × Male	1.97	1.74	.257	−1.44	5.37
Light × Male	−2.15	0.71	.002	−3.54	−0.77
Male × Time	−0.10	0.09	.279	−0.27	0.08	.929
Male × Time2	0.01	0.01	.529	−0.01	0.02	.861
Physical activity × Sex × Time						.001
Sedentary × Male × Time	−0.76	0.60	.204	−1.92	0.41
Light × Male × Time	0.99	0.29	.001	0.42	1.56
Physical activity × Sex × Time2						.006
Sedentary × Male × Time2	0.07	0.05	.172	−0.03	0.18
Light × Male × Time2	−0.08	0.03	.004	−0.13	−0.03

Notes: BMI = body mass index; APOE = apolipoprotein E; HS = high school. Model parameters excluded persons missing on any primary predictors and covariates. Nested model comparisons used the same model parameters.