Table 3.
Methodological characteristics of included studies.
| Factors | No. of Publication/Citation |
|---|---|
| 1. Focus | |
| 1.1. Infectious disease surveillance | |
| Malaria | [79,171,172,173] |
| Tuberculosis | [65] |
| Influenza like-illness | [128] |
| 1.2. Non-infectious disease surveillance | |
| Child malnutrition | [170,172] |
| Maternal health | [115] |
| 1.3. Other (various diseases /symptoms) | [8] |
| 2. Design | |
| Pilot/case study | [8,79,170,171,172,173] |
| Longitudinal study | [115,128] |
| 3. Hardware format | |
| Basic mobile phones | [8,79,115,128,170,173] |
| Smart phones | [171,172] |
| Tablets | [65] |
| 4. Software / data transformation format | |
| Standard 160-character SMS | [79,128,171] |
| Open source software “Rapid SMS” | [115,170,172,173] |
| App / mobile phone module | [8,65] |
| [171] |