Comparison 3. Prednisone + azathioprine (p/sone+azathio) versus prednisone (p/sone).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Disease control	2		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
1.1 Disease control at 6 months	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 Disease control: well at 3 years, either needing or not needing further treatment	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
2 Mortality and severe adverse events at 6 months	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
3 Mortality	2		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
3.1 Mortality at 6 months	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3.2 Mortality at 3 years	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]