Table 1 Number of studies identifying positive health impacts by study design type
From: Policy lessons from health taxes: a systematic review of empirical studies
Study design | Number of Studies Included | Number of studies that found a positive health impact | Number of studies that found no, or negative, health impacts |
|---|---|---|---|
Modeling | 17 | 16 | 3 |
Experimental | 0 | 0 | 0 |
Evaluation | 8 | 4 | 4 |
Mixed methoda | 1 | 1 | 1 |
Total | 26 | 21 | 9 |