Categorical answer modes provide superior validity to open answers when asking for level of physical activity: A cross-sectional study.
| Image |  |
|---|---|
| Description | scientific article published on 21 September 2015 |
| Author/s |
author: Sven Olsson Örjan Ekblom Lena V Kallings |
| Publication date | September 21, 2015 |
| Language | |
| Country of origin | |
| Wikipedia link | |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |