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Table 1 Overview of outcome measures

From: A randomized blinded controlled trial of mobile phone reminders on the follow-up medical care of HIV-exposed and HIV-infected children in Cameroon: study protocol (MORE CARE)

Outcomes measures Scale Type Measure Analysis method
Primary     
Presence at appointment     
• Efficacy Nominal Binary % present at appointment Chi-square test
Additive and multiplicative scales for synergy measurement
• Efficiency Ratio Continuous Mean of efficiency T-test
     - Working time Ratio Continuous Mean of working time T-test
     - Financial cost Ratio Continuous Mean of financial cost T-test
Secondary     
Success of intervention Nominal Binary % success of intervention Chi-square test