RESUMO
INTRODUCTION: This study examined the effectiveness of mobile phone reminders in improving the completeness and timeliness of childhood immunization. METHOD: We conducted a parallel arm cluster randomized controlled trial in four primary health care facilities in Nigeria. Reminders were sent to eligible participants in the intervention group at specific intervals when their children were scheduled to receive the vaccines administered at the sixth, 10, and 14 weeks after birth. Immunization records of all participants' children were then tracked to assess their immunization status. RESULTS: The immunization status of the intervention (n = 275) and control (n = 261) arms was analyzed. Completeness and timeliness of the vaccine series were significantly higher (p < .001) among children of participants in the intervention (n = 169, 61.5% and n = 138, 50.2%) than those in the control group (n = 35, 13.4% and n = 13, 5%) arm. DISCUSSION: Mobile phone reminders were established to be effective in increasing the completeness and timeliness of childhood immunization.
RESUMO
PURPOSE: This study assessed the effect of mobile phone text message and call reminders in the completeness of the pentavalent vaccine administered against diphtheria, pertussis, tetanus, hepatitis B, and Haemophilus influenza. DESIGN AND METHODS: The population for this quasi-experimental study were recent mothers of children not more than three weeks old selected from six local government areas of Kano State, Northern Nigeria. Three local government areas were each allocated to the intervention (reminder) and control groups of the study. Mobile phone reminders (SMS and follow-up calls) were sent to mothers in the reminder group three days to and on the due date of their child's schedule for the 1st, 2nd and 3rd doses of the pentavalent vaccine. All statistical data were entered into the Statistical Package for Social Sciences (SPSS) version 23.0 and analysed using descriptive and inferential statistics. RESULTS: A total of 541 mothers (271 in the intervention group and 270 in the control group) participated in the study. Completion rates for the three doses of the pentavalent vaccine were observed to be higher for children in the reminder group (n = 161, 59.4%) compared to those in the control group (n = 92, 34.1%). CONCLUSION: Mobile phone reminders were effective and improved the rate of completeness of the pentavalent vaccine in the studied population. In line with the findings of the study, it is recommended that future studies should focus on identifying the best approach to remind parents either through SMS, phone calls, or voice messages or a combination of any of the approaches. PRACTICE IMPLICATION: Nurses and other health care providers will have empirical evidence on the use of mobile phone technology to improve the health and wellbeing of children by protecting them from vaccine-preventable diseases.
