The open user group may be subject to ascertainment or sample selection bias.
We simulated datasets as Poisson samples from the expected AFS under the simulated models (using scripts modified from the δaδi user group).
I also joined an online user group.
Application reference: User group definitions.
Each user is associated with one user group.
We test this argument with data from a sample of 200 forest user groups in Bolivia and find broad empirical support for our propositions: Local monitoring can be an important predictor of forest governance performance, but focusing on monitoring alone can be misleading.
With respect to the days of use, it is difficult to explain the study outcomes, but, as stated above, they could be related to the low sample size in the infrequent user groups which might have resulted in a lack of statistical power to address the issue of the association between the risk of experiencing an MVA while incidentally exposed to psychoactive medications [ 10, 11].
For the crowdsourced classification, we randomly sample 110 users in each of the following nine user groups ("All", "Location inferred", "Age inferred", "Female", "Male", "Statuses < 100", "Statuses < 1000", "Followers < 100", "Followers < 1000"), resulting in 9,961 users for the flu dataset.
Out of the four user groups, frequent users of two categories of professionals were the largest group, corresponding to 48% of the sample (n = 67 patients).
The sampling strategy for composing the end users group was purposive, 14 employing a 'maximal variation' sampling technique.
Access is granted via user groups rather than individual users.
