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Table 4 GRADE evidence table for Study’s outcome measures

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

Outcomes

Risk of biasa

Imprecisionb

Indirectnessc

Inconsistencyd

Sample size

Quality

Ownership of mobile-phone

Not serious

Not serious

Not serious

Not serious

9923

High quality

Acceptability of mobile-phone reminders

Not serious

Not serious

Not serious

Serious

9923

Moderate quality

Preference: Phone calls over SMS/texts

Not serious

Not serious

Not serious

Serious

2865

Moderate quality

Preference: SMS/texts over phone calls

Not serious

Not serious

Not serious

Serious

2865

Moderate quality

  1. aMore than 25% of studies with a risk of bias (i.e., inappropriate sampling method or statistical analyses)
  2. bMore than 25% of studies with small sample size
  3. cMore than 25% of studies did not use valid and reliable methods for data collection
  4. dHeterogeneity across the studies (confidence interval ≥ 5.0% between upper and lower limits)