Table 6.

Sub-group analysis of COPD patients with anxiety.

Group	Sub-Group	N	SMD	95% CI	p	I2
event	tai chi	3	−0.96	−1.97,0.05	0.004	81.9%
	health qigong	7	−0.71	−0.89, −0.52	0.55	0.0%
	yoga	3	−1.02	−2.00, −0.04	0.000	89.1%
disease course (year)	less than 10 years	6	−0.75	−0.99, −0.51	0.483	0.0%
	more than 10 years	4	−1.17	−1.89, −0.46	0.000	90%
year	50–59.9	3	−0.77	−1.19, −0.34	0.111	54.4%
	60–69.9	7	−1.08	−1.52, −0.64	0.000	75.9%
	more than 70	3	−0.51	−0.82, −0.21	0.424	0.0%
frequency (time/week)	2–3 times/week	4	−0.59	−0.89, −0.29	0.758	0.0%
	4–5 times/week	5	−0.85	−1.34, −0.37	0.001	78.4%
	6–7 times/week	3	−1.2	−1.95, −0.46	0.001	85.3%
time (min)	30 ≤ min < 60	6	−0.78	−1.02, −0.55	0.496	0.0%
	60 ≤ min ≤ 90	6	−0.94	−1.48, −0.40	0.000	86.4%
duration (week)	8–12 weeks	7	−0.83	−1.24, −0.42	0.007	66.0%
	24 weeks	5	−0.90	−1.32, −0.47	0.000	79.4%
	48weeks	1	−1.96	−2.46, −1.47	−−	−−