Table 1. Random effects meta-regression.

Covariate	Outcome	β coefficient	95% CI	p-value
Study date	Toxicity	-0.009	-0.017–0	0.045
	Side effects	-0.007	-0.018–0.03	0.162
	Pill burden	-0.009	-0.017–0	0.045
	Palatability	-0.012	-0.003–0.050	0.16
	Distance to clinic	-0.003	-0.040–0.320	0.834
	Secrecy/stigma	0.001	-0.009–0.010	0.908
	Cost	0	-0.052–0.010	0.115
	Felt sick	-0.011	-0.186–-0.030	0.006