Table 3

The number of topics arranged in descending determined in each study using latent Dirichlet allocation as a type of unsupervised learning approach

AuthorData sourceNo. of topics
KowalksiNHS choices60
Ranard et al56Yelp50
Bahja et al26NHS choices30
Doing-Harris et al24Press Ganey30
Hao et al51Haodf10
James et al53RateMDs6