Table 2 Regression coefficients showing the longitudinal association between television and cognition.

	Verbal memory			Semantic fluency
	B ± SE	p	CI	B ± SE	p	CI
Model 1
<2.5 hrs/day	REF
2.5–3.5 hrs/day	−0.09 ± 0.16	0.58	−0.41 to 0.23	−0.08 ± 0.31	0.80	−0.69 to 0.53
3.5–4.5 hrs/day	−0.58 ± 0.16	<0.001	−0.90 to −0.26	−1.06 ± 0.32	<0.001	−1.68 to -0.44
4.5–7 hrs/day	−0.86 ± 0.15	<0.001	−1.16 to −0.56	−1.21 ± 0.30	<0.001	−1.80 to −0.62
>7 hrs/day	−0.84 ± 0.16	<0.001	−1.16 to −0.53	−1.49 ± 0.31	<0.001	−2.10 to −0.87
Model 2
<2.5 hrs/day	REF
2.5–3.5 hrs/day	0.01 ± 0.15	0.93	−0.29 to 0.31	0.15 ± 0.30	0.51	−0.44 to 0.75
3.5–4.5 hrs/day	−0.34 ± 0.16	0.030	−0.64 to −0.03	−0.51 ± 0.31	0.10	−1.12 to 0.10
4.5–7 hrs/day	−0.39 ± 0.15	0.011	−0.69 to −0.09	−0.22 ± 0.30	0.47	−0.82 to 0.38
>7 hrs/day	−0.50 ± 0.16	0.002	−0.82 to −0.19	−0.62 ± 0.32	0.051	−1.25 to 0.003
Model 3
<2.5 hrs/day	REF
2.5–3.5 hrs/day	0.001 ± 0.15	>0.99	−0.30 to 0.30	0.09 ± 0.30	0.77	−0.50 to 0.69
3.5–4.5 hrs/day	−0.32 ± 0.16	0.040	−0.63 to −0.01	−0.44 ± 0.31	0.16	−1.05 to 0.17
4.5–7 hrs/day	−0.38 ± 0.15	0.014	−0.68 to −0.08	−0.19 ± 0.31	0.53	−0.79 to 0.41
>7 hrs/day	−0.45 ± 0.16	0.005	−0.77 to −0.14	−0.50 ± 0.32	0.12	−1.13 to 0.13

Boldface indicates statistical significance; B = B coefficient; SE = standard error; CI = confidence intervals. Model 1 is adjusted for baseline cognition. Model 2 is additionally adjusted for demographic covariates (sex, age, marital status, ethnicity, educational attainment, employment status, retirement status, wealth, social support) and health-related covariates (depression, self-reported physical health, smoking, alcohol consumption and both long-standing and new chronic conditions). Model 3 is additionally adjusted for sedentary behaviours (physical activity level, mobility problems preventing walking, not leaving the house, reading a daily newspaper and using the internet). N = 3,590.

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