| Field | Before | After |
|---|---|---|
| Field Study Withdrawn | Before | After No |
| Field Intervention Completion Date | Before | After May 01, 2021 |
| Field Data Collection Complete | Before | After Yes |
| Field Final Sample Size: Number of Clusters (Unit of Randomization) | Before | After 162 |
| Field Was attrition correlated with treatment status? | Before | After No |
| Field Final Sample Size: Total Number of Observations | Before | After 579 |
| Field Final Sample Size (or Number of Clusters) by Treatment Arms | Before | After 112 path segments, 50 compounds |
| Field Public Data URL | Before | After Anonymized survey data and lux data will be available for public use. The sensor data was ultimately not used in the impact evaluation, but some sensor data that was used for a separate research project is available at the following DOI: https://doi.org/10.3929/ethz-b-000584335 |
| Field Is there a restricted access data set available on request? | Before | After Yes |
| Field Restricted Data Contact | Before | After [email protected] |
| Field Program Files | Before | After No |
| Field Data Collection Completion Date | Before | After July 14, 2021 |
| Field Is data available for public use? | Before | After Yes |
| Field | Before | After |
|---|---|---|
| Field Paper Abstract | Before | After Many informal settlements have little or no public lighting. Few studies analyze the impact of streetlighting on life at night in these neighborhoods, though theory suggests it may help residents feel safe, spend more time outside, and access shared infrastructure after dark. We apply a cluster-randomized controlled trial to test the efficacy and impact of solar lights mounted onto houses as an alternative to standard streetlights in one informal settlement in Cape Town. Treated areas were between 6 and 8 times brighter than control areas, partly because theft and vandalism were minimal. The treatment is also linked to increases in perceived safety, but not to changes in most nighttime activities or experience of crime. However, residents were more likely to use shared sanitation at night. This study is the first, to our knowledge, to quantify the impact of streetlighting in informal settlements and to study a distributed public lighting alternative. |
| Field Paper Citation | Before | After Borofsky, Y. and Günther, I., Bringing Light To The Dark — Can Solar Public Lighting Improve Nighttime Life For The Urban Poor? Working Paper. 2022. |
| Field Paper URL | Before | After https://ethz.ch/content/dam/ethz/special-interest/gess/development-economics-dam/Publications/Light_Solar_Public.pdf |