Table 5

Meta-analysis results summary

OutcomeType of studiesStudies (n)RR*Lower limitUpper limitP value for RRQ-valueP value for Q statisticI-squared
Continuation of injectable contraceptionRCTs31.2721.1631.3910.0000.9840.6110.000
Observational studies31.1781.1001.2620.0003.7700.15246.951
PregnancyRCTs20.5820.1532.2170.4280.5800.4460.000
Observational studies21.1070.2335.2610.8990.7000.4030.000
  • *Relative risk (risk ratio) comparing self-administration with provider administration.

  • RCTs, randomised controlled trials.