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Table 2 Logistic regression results for the intent to treat effect of SMS reminders on adherence to treatment advice

From: SMS messages increase adherence to rapid diagnostic test results among malaria patients: results from a pilot study in Nigeria

Primary outcome    Percentage (N)    SMS  SMS
  SMS sent (213) SMS not sent (206) SMS risk ratio (95% CI) Risk difference (95% CI)
1 Followed treatment advice 79.8% (170) 65.5% (135) 2.08 (1.44–3.01) 14.3% (6.68%–21.9%)
2 Followed treatment advice*    1.70 (1.20–2.42) 10.1% (3.66%–16.6%)
3 Followed treatment advice**    2.19 (1.50–3.18) 14.8% (8.14%–21.4%)
4 Followed treatment advice***    2.13 (1.45–3.12) 14.2% (7.33%–21.1%)
  1. N = 419.
  2. *Controls for city survey was conducted (Ibadan/Ogbomosho) and treatment*city survey was conducted (Model 2).
  3. **Controls for city survey was conducted (Ibadan/Ogbomosho), treatment*city survey was conducted, whether assignment to the treatment/control group was made off-protocol, and treatment* whether survey assignment to the treatment/control group was made off-protocol (Model 3).
  4. ***Controls for city survey was conducted (Ibadan/Ogbomosho), treatment*city survey was conducted, whether assignment to the treatment/control group was made off-protocol, and treatment* whether survey assignment to the treatment/control group was made off-protocol, an indicator variable for surveys conducted at PPMVs, an indicator variable for participant who had a bank account, and an indicator variable for participant could not read or write (Model 4).
  5. Standard errors are clustered by retail site.