| Author/Editor | Li, Ye; Wang, Wei; Wu, Qiong; van Velthoven, Michelle HMMT; Chen, Li; Du, Xiaozhen; Zhang, Yanfeng; Rudan, Igor; Car, Josip | |
| Title | Increasing the response rate of text messaging data collection | |
| Type | članek | |
| Vol. and No. | Letnik 22, št. 1 | |
| Publication year | 2015 | |
| Volume | str. 51-64 | |
| ISSN | 1067-5027 - Journal of the American Medical Informatics Association : JAMIA | |
| Language | eng | |
| Abstract | Objective To test the effectiveness of multiple interventions on increasing the response rate of text messaging for longi- tudinal data collection. Methods Our cohort included 283 caregivers of children aged 6-12 months who were participating in an anemia program in rural China. Using text messages to collect data on anemia medication adherence, we conducted a delayed randomized controlled trial to test multiple interventions (an additional four reminders; a %5.0 (US$0.79) credit reward for replying; and a feedback text message). After a 6-week pilot study with week 7 as the baseline measurement, we randomly allocated all participants into two groups: group 1 (n = 142) and group 2 (n = 141). During weeks 8-11, we introduced the interventions to group 1, and in weeks 12-15 the intervention was introduced to both groups. We com- pared the response rates between groups and explored factors affecting the response rate. Results During weeks 8-11, the response rates in group 1 increased and were significantly higher than in group 2 (p < 0.05). During weeks 12-15, the response rate increased significantly in group 2 (p > 0.05) and slightly decreased in group 1. Younger participants or participants who had children with lower hemoglobin concentration were more likely to reply (p = 0.02). Sending four reminders on the second day contributed to only 286 (11.7%) extra text messages. Discussion Our study showed that multiple interventions were effective in increasing response rate of text messaging data collection in rural China. Conclusions Larger multi-site studies are needed to find the most effective way of using these interventions to allow usage of text messaging data collection for health research. | |
| Keywords | data collection nutrition surveys program evaluation zbiranje podatkov prehranske raziskave vrednotenje programa |