Table 2. Association between quality of sputum sample and patient characteristics, according to intervention (exposure to sputum submission instruction video, n = 100) or control group (standard care, n = 100).
| Characteristic | No. | Positive sputum microscopy 1 , n (%) | Sputum volume ≥3 mL 1 , n (%) | High-quality sputum 1 , n (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Intervention | Control | Intervention | Control | P value | Intervention | Control | P value | Intervention | Control | P value | |
| Age group, years | 0.037 | 0.55 | 0.093 | ||||||||
| 18–37 | 53 | 46 | 23 (43.4) | 16 (34.8) | 33 (62.3) | 22 (47.8) | 35 (66) | 33 (71.7) | |||
| >37 | 47 | 54 | 33 (70.2) | 7 (13) | 45 (97.8) | 19 (35.2) | 42 (85.7) | 26 (48.1) | |||
| Sex | 0.22 | 0.93 | 0.77 | ||||||||
| Male | 54 | 52 | 35 (64.8) | 12 (23.1) | 43 (79.6) | 25 (48.1) | 47 (87) | 30 (57.7) | |||
| Female | 46 | 48 | 21 (45.7) | 11 (22.9) | 35 (76.1) | 19 (39.6) | 39 (84.8) | 29 (60.4) | |||
| HIV status | 0.98 | 0.50 | 0.56 | ||||||||
| Positive | 30 | 19 | 14 (46.7) | 3 (15.8) | 21 (70) | 8 (42.1) | 23 (76.7) | 6 (31.6) | |||
| Negative / unknown | 70 | 81 | 42 (60) | 20 (24.7) | 27 (38.6) | 30 (37) | 41 (58.6) | 23 (28.4) | |||
| Level of education | 0.99 | 0.98 | 0.99 | ||||||||
| Basic/higher education | 93 | 97 | 48 (51.6) | 20 (20.6) | 49 (52.7) | 28 (28.9) | 57 (61.3) | 35 (36.1) | |||
| No formal education | 7 | 3 | 6 (85.7) | 0 (0) | 6 (85.7) | 0 (0) | 6 (85.7) | 0 (0) | |||
| Employment status | 0.97 | 0.29 | 0.749 | ||||||||
| Employed | 77 | 75 | 44 (57.1) | 18 (24) | 28(36.4) | 30 (40) | 67 (87) | 42 (56) | |||
| Unemployed | 23 | 25 | 12 (52.2) | 5 (20) | 8 (34.8 | 11 (44) | 17 (74) | 13 (52) | |||
1 see definitions in the Methods section.
P values correspond to interaction terms derived from logistic regression models.