Table 4.

Results of meta regression analysis with the ratio of male subjects.

	Classification	Estimate	SE	−95% CI	+95% CI	z-Value	p-Value
Duration	slope	0.00986	0.00084	0.00821	0.01152	11.69237	0.00000
	intercept	−0.11136	0.03517	−0.18030	−0.04242	−3.16599	0.00155
Frequency	slope	−0.00103	0.00084	−0.00268	0.00062	−1.22034	0.22233
	intercept	0.21568	0.03517	0.14674	0.28462	6.13184	0.00000
Intensity	slope	0.00620	0.00087	0.00449	0.00790	7.13147	0.00000
	intercept	−0.06350	0.03665	−0.13534	0.00833	−1.73259	0.08317
Total	slope	0.00496	0.00049	0.00399	0.00592	10.0824	0.00000
	intercept	0.01618	0.02058	−0.02416	0.05651	0.78602	0.43186