Comparison 8. Bull 2016: automated interactive voice messages + teen outreach programme versus teen outreach programme.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
8.1 Mean percentage of sex acts protected by condoms in past 3 months – sexually active	1	55	Mean Difference (IV, Fixed, 95% CI)	10.50 [‐8.87, 29.87]
8.2 Mean percentage of sex acts protected by contraception in past 3 months – sexually active	1	50	Mean Difference (IV, Fixed, 95% CI)	12.40 [‐5.40, 30.20]
8.3 Access to contraceptive or sexually transmitted disease services	1	624	Risk Ratio (M‐H, Fixed, 95% CI)	0.72 [0.40, 1.28]
8.4 Ever pregnant or caused pregnancy (adjusted)	1	371	Odds Ratio (IV, Fixed, 95% CI)	0.85 [0.28, 2.57]