Table 3.

Subgroup analysis results for attention time.

Attention (time)
Covariate	Group	SMD	Lower 95% CI	Upper 95% CI	p	Heterogeneity (I2)	p between groups	Heterogeneity between groups (I2)
Population	8	−0.31	−0.61	0			0.28	13.80%
Health	5	−0.18	−0.62	0.27	0.44	38%
Illness	3	−0.52	−0.96	−0.08	0.02	0%
Age (years)	8	−0.31	−0.61	0			0.02	81%
>60	3	0.12	−0.34	0.58	0.61	0%
18–60	5	−0.55	−0.9	−0.21	0.002	0%
Intervention duration	8	−0.31	−0.61	0			0.26	21%
Less than 4 weeks	2	−0.62	−1.25	0.01	0.61	21%
More than 4 weeks	6	−0.21	−0.61	0.13	0.23	14%