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Table 3 Acceptability of mobile-phone reminders by various study characteristics

From: Acceptability of mobile-phone reminders for routine childhood vaccination appointments in Nigeria – a systematic review and meta-analysis

Acceptability of mobile-phone reminders No. of studies Study sample Pooled estimate 95% CI I2
Study period
° 2011 to 2015 5 2521 0.828 0.703–0.924 98.1%
° 2016 to 2020 11 7402 0.874 0.793–0.938 98.7%
Region
° North (West, Central, and East) 4 1497 0.757 0.672–0.833 92.0%
° South (West, South, and East) 11 4926 0.889 0.809–0.949 98.4%
° Multi-regional 1 3500 0.889 0.879–0.899
Study setting
° Rural settings 2 3866 0.894 0.884–0.903
° Mixed (rural and urban) 1 615 0.997 0.988–0.999
° Urban settings 13 5442 0.833 0.749–0.903 98.3%
Educational status
° Secondary education, < 90% 8 3177 0.842 0.722–0.933 98.5%
° Secondary education, ≥ 90% 8 6746 0.877 0.794–0.941 98.6%
Study design
° Cross-sectional 13 8133 0.826 0.749–0.891 98.4%
° Interventional studies 3 1790 0.968 0.927–0.993 0.0%
Quality of included studies
° High quality 11 8756 0.879 0.811–0.934 98.6%
° Low and Medium quality 5 1167 0.814 0.628–0.946 98.1%
  1. ** Includes states in all regions
  2. NOTE: The pooled estimates are the proportions of respondents who were willing to receive mobile-phone reminders. For example, in the 5 studies conducted between 2011 and 2015 and included in this review, 82.8% of respondents were willing to receive mobile-phone reminders for routine childhood vaccination appointments