Table 2

Effect of notification frequency

Intervention (%)Control (%)Risk ratioRisk difference (%)Coeff* (%)p value (risk difference)I2 (Risk difference) (%)Obs
Attendance
More than one notification78 (N=5, CI 68 to 88)52 (N=5, CI 31 to 78)1.49 (CI 1.17 to 1.88)25 (CI 11 to 39)190.016613
One notification62 (N=8, CI=40 to 83)55 (N=8, CI=31 to 78)1.09 (CI=1.00 to 1.18)6 (CI=2 to 10)
‘No show’ rate
More than one notification16 (N=3, CI −3 to 3)24 (N=3, CI 2 to 46)0.75 (CI 0.57 to 0.99)−5 (CI=−8 to −1)0.30.913515
One notification15 (N=12, CI 10 to 20)21 (N=12, CI 15 to 26)0.75 (CI 0.68 to 0.82)−5 (CI −8 to −3)
  • Obs, number of observations.

  • *Coeff. presents difference in % risk difference between more than one notification and one notification.