Table 2.
Part-of-Speech (POS) frequencies in tweets of control, depressive users, and depressive tweets datasets.
| Type of POS | POS in the control dataset, n (%) | POS in the depressive users dataset, n (%) | POS in the depressive tweets dataset, n (%) |
| Noun | 2,298,544 (28.48) | 270,104 (17.77) | 1776 (15.07) |
| Verb | 1,660,700 (20.58) | 400,755 (26.36) | 3391 (28.77) |
| Pronouns | 770,955 (9.55) | 225,913 (14.86) | 1627 (13.80) |
| Adjectives | 593,327 (7.35) | 83,089 (5.47) | 588 (4.99) |
| Determiner | 1,068,130 (13.23) | 177,795 (11.70) | 1342 (11.39) |
| Adverbs | 496,988 (6.16) | 140,963 (9.27) | 1351 (11.46) |
| Adpositions | 854,573 (10.59) | 123,867 (8.15) | 1052 (8.93) |
| Conjunctions | 327,852 (4.06) | 97,541 (6.42) | 659 (5.59) |