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Table 2 Ownership of mobile-phone by various study characteristics

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

Ownership of mobile phones No. of studies Study sample Pooled estimate 95% CI I2
Study period
° 2011 to 2015 5 2521 0.970 0.943–0.989 91.1%
° 2016 to 2020 11 7402 0.961 0.926–0.985 97.2%
Region
° North (West and Central) 4 1497 0.915 0.817–0.987 96.8%
° South (West, South, and East) 11 4926 0.975 0.949–0.992 95.6%
° Multi-regions ** 1 3500 0.983 0.978–0.987
Study setting
° Rural settings 2 3866 0.986 0.982–0.990
° Mixed (rural and urban) 1 615 0.860 0.831–0.885
° Urban settings 13 5442 0.963 0.937–0.983 94.9%
Educational status
° Secondary education, < 90% 8 3177 0.939 0.875–0.981 97.3%
° Secondary education, ≥ 90% 8 6746 0.982 0.969–0.991 84.4%
Study design
° Cross-sectional 13 8133 0.953 0.922–0.976 96.5%
° Interventional studies 3 1790 0.994 0.987–0.999 0.0%
Quality of included studies
° High quality 11 8756 0.963 0.934–0.985 97.2%
° Low and Medium quality 5 1167 0.966 0.923–0.992 90.4%
  1. ** Includes states in all regions
  2. NOTE: The pooled estimates are the proportions of respondents who owned a mobile phone. For example, in the 5 studies conducted between 2011 and 2015 and included in this review, 97% of respondents owned a mobile phone