Table 2.
Latent Dirichlet allocation topic modeling for all posts, showing the topics’ post distribution, Facebook metrics, and sentiments from Linguistic Inquiry and Word Count (LIWC; N=34,885).
| Topic number | Topic name | Posts, n (%) | Facebook metricsa | Sentiments from LIWCb | |||||
|
|
|
|
Number of likes, mean (SD) | Number of comments, mean (SD) | Number of shares, mean (SD) | Word count, mean (SD) | Positive emotion percentage, mean (SD) | Negative emotion percentage, mean (SD) | |
| 1 | Heart health promotion | 10,912 (31.3) | 37.67 (264.95) | 2.31 (14.51) | 8.81 (50.78) | 47.64 (36.70) | 5.26 (5.16) | 1.12 (2.05) | |
| 2 | Sharing personal experiences | 8094 (23.2) | 48.37 (205.55) | 8.04 (26.47) | 15.14 (113.92) | 59.02 (77.90) | 4.84 (5.58) | 3.02 (4.12) | |
| 3 | Risk-reduction education | 8557 (24.5) | 49.63 (217.25) | 2.82 (17.36) | 18.85 (108.32) | 43.04 (57.96) | 4.87 (8.56) | 4.14 (4.54) | |
| 4 | Heart disease and heart health promotion for women | 5200 (14.9) | 68.65 (276.00) | 5.56 (24.39) | 33.36 (166.07) | 44.41 (53.66) | 2.53 (3.57) | 2.62 (4.03) | |
| 5 | Educational information sharing | 1208 (3.5) | 63.65 (114.14) | 10.43 (18.39) | 5.77 (18.25) | 137.98 (40.63) | 3.02 (7.25) | 2.78 (1.37) | |
| 6 | Physicians’ live discussion sessions | 924 (2.6) | 58.21 (152.55) | 11.97 (32.09) | 14.03 (46.10) | 49.2 (34.61) | 1.38 (2.10) | 3.19 (3.00) | |
aData collected in November 2021.
bPositive and negative emotions represent the percentage of words in a post that appear in the dictionary indicating positive and negative emotions.