Too many zeros and/or highly skewed? A tutorial on modelling health behaviour as count data with Poisson and negative binomial regression
Background Dependent variables in health psychology are often counts, for example, of a behaviour or number of engagements with an intervention. These counts can be very strongly skewed, and/or contain large numbers of zeros as well as extreme outliers. For example, ‘How many cigarettes do you smoke...
| Published in: | Health Psychology and Behavioral Medicine |
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| Main Author: | |
| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-01-01
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| Online Access: | http://dx.doi.org/10.1080/21642850.2021.1920416 |