Table 1 A comparison of time and potential costs in physical and visual image audits
Physical audits | Visual image audits | |
|---|---|---|
Working days | 5.5 | 4.5 |
Transport | Bus (urban), private vehicle (rural) | None |
REAT questionnaire | Paper-based | Computer-based |
Data collection | Maps, stationary, camera | Internet |
Data entry | Yes | No (finished in data collection) |