TABLE 1.
Characteristics of clustered and nonclustered patients with drug-resistant tuberculosis
| Characteristic | Total (n = 201) (%) | Clustered (n = 41) (%) | Not clustered (n = 160) (%) | P valuea |
|---|---|---|---|---|
| Male sex | 131 (65) | 32 (78) | 99 (62) | 0.07 |
| Ethnicity | 0.06 | |||
| White | 29 (14) | 7 (17) | 22 (14) | |
| African American | 28 (14) | 11 (27) | 17 (11) | |
| Hispanic | 116 (58) | 19 (46) | 97 (61) | |
| Asian | 27 (13) | 4 (10) | 23 (14) | |
| Age in years | 0.45 | |||
| <15 | 3 (1) | 1 (2) | 2 (1) | |
| 15–24 | 21 (10) | 2 (5) | 19 (12) | |
| 25–44 | 107 (53) | 24 (59) | 83 (52) | |
| >44 | 70 (35) | 14 (34) | 56 (35) | |
| Country of birth | 0.06 | |||
| United States | 75 (37) | 22 (63) | 53 (39) | |
| Mexico | 62 (31) | 9 (26) | 53 (39) | |
| Vietnam | 17 (8) | 3 (9) | 14 (10) | |
| Otherb | 18 (9) | 1 (3) | 17 (12) | |
| Unknown | 29 (14) | 6 (15) | 23 (14) | |
| HIV infectionc | 25 (12) | 7 (17) | 18 (11) | 0.35 |
| Drug resistanced | 0.68 | |||
| INH only | 49 (24) | 12 (29) | 37 (23) | |
| INH, SM only | 28 (14) | 6 (15) | 22 (14) | |
| RIF only | 23 (11) | 6 (15) | 17 (11) | |
| INH, RIF | 82 (41) | 15 (37) | 67 (42) | |
| Other patterns | 19 (10) | 2 (5) | 17 (11) | |
| County | 0.001 | |||
| Dallas or Tarrant | 39 (19) | 12 (29) | 27 (17) | |
| Harris | 33 (16) | 8 (20) | 25 (16) | |
| U.S.-Mexican bordere | 76 (38) | 14 (34) | 62 (39) | |
| Northeastf | 9 (4) | 5 (12) | 4 (3) | |
| Other | 44 (22) | 2 (5) | 42 (26) |
a
Two-sided Fisher’s exact test comparing clustered and non clustered patients.
b
Other, Asian countries not including Vietnam, Central and South America, and Africa.
c
This represents a minimum estimate, as not all patients were tested for HIV.
d
INH, isoniazid; SM, streptomycin; RIF, rifampin.
e
Cameron, El Paso, Hidalgo, Maverick, Starr, and Webb counties.
f
Anderson, Rusk, Shelby, Smith, and Upshur counties.