TABLE 4.
Comparison of patient characteristics according to the outcome measures low and high infectivities and low and high pathogenicities
| Characteristic | Infectivity
|
Pathogenicity
|
||||
|---|---|---|---|---|---|---|
| Low (n = 224) | High (n = 153) | P value | Low (n = 341) | High (n = 45) | P value | |
| Mean (SD) age (yr) | 45.0 (16.8) | 42.7 (15.7) | 0.18 | 44.6 (16.5) | 39.7 (15.6) | 0.06 |
| No. (%) of subjects | ||||||
| Group 1 | 34 (15.2) | 20 (13.1) | 0.57 | 50 (14.7) | 6 (13.3) | 0.81 |
| Group 2 | 148 (66.1) | 99 (64.7) | 0.78 | 223 (65.4) | 29 (64.4) | 0.90 |
| Group 3 | 42 (18.8) | 34 (22.2) | 0.41 | 68 (19.9) | 10 (22.2) | 0.72 |
| Female | 46 (20.5) | 34 (22.2) | 0.70 | 71 (20.8) | 10 (22.2) | 0.83 |
| Male | 178 (79.5) | 119 (77.8) | 270 (79.2) | 35 (77.8) | ||
| Asian | 12 (5.4) | 9 (5.9) | 0.83 | 19 (5.6) | 2 (4.4) | 0.97 |
| Black | 79 (35.3) | 68 (44.4) | 0.07 | 126 (37.0) | 23 (51.1) | 0.07 |
| Hispanic | 16 (7.1) | 14 (9.2) | 0.48 | 28 (8.2) | 3 (6.7) | 0.95 |
| White | 114 (50.9) | 62 (40.5) | 0.05 | 165 (48.4) | 17 (37.8) | 0.18 |
| Other | 3 (1.3) | 3 (0.9) | ||||
| HIV positive | 107 (47.8) | 62 (40.5) | 0.16 | 161 (47.2) | 15 (33.3) | 0.08 |
| HIV negativea | 117 (52.2) | 91 (59.5) | 180 (52.8) | 30 (66.7) | ||
| Ever smear positive | 120 (53.6) | 93 (60.8) | 0.17 | 192 (56.3) | 25 (55.6) | 0.92 |
| Always smear negative | 40 (17.9) | 19 (12.4) | 0.15 | 50 (14.7) | 10 (22.2) | 0.19 |
| More than three sputum smears | 64 (28.6) | 41 (26.8) | 0.71 | 99 (29.0) | 10 (22.2) | 0.34 |
| Mean no. of contacts (SD) | ||||||
| Named | 11.5 (29.6) | 9.4 (20.5) | 0.45 | 10.9 (27.3) | 6.9 (11.8) | 0.33 |
| Screened | 10.9 (29.5) | 8.6 (20.1) | 0.40 | 10.2 (27.1) | 6.4 (10.8) | 0.35 |
| Followed up | 10.5 (29.0) | 8.2 (18.0) | 0.38 | 9.7 (26.2) | 6.4 (10.9) | 0.40 |
a
Includes subjects whose HIV status is unknown.