Table 2.
Frequency of studies by methodological approach and analytical technique from a systematic review of methodological approaches and ethical considerations for public health research using Twitter data, 2006-2019.
| Methodological approach and analytical techniquea | Frequency (N=367), n (%) | |
| Sentiment mining | 227 (62) | |
|
|
Natural language processing | 145 (64) |
|
|
Machine learning | 66 (29) |
|
|
Spatial analysis | 12 (5) |
|
|
Descriptive analyses or frequencies | 4 (2) |
| Surveillance | 224 (61) | |
|
|
Natural language processing | 104 (46) |
|
|
Machine learning | 85 (38) |
|
|
Spatial analysis | 17 (8) |
|
|
Descriptive analyses or frequencies | 18 (8) |
| Thematic exploration | 217 (59) | |
|
|
Natural language processing | 114 (52) |
|
|
Machine learning | 81 (37) |
|
|
Spatial analysis | 13 (6) |
|
|
Descriptive analyses or frequencies | 9 (4) |
|
|
Tool evaluation | 61 (16) |
|
|
Network science | 36 (10) |
aMultiple responses were allowed.