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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