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Table 2 Sociodemographic and clinical variables of the PTB cases in the low-, intermediate- and high-incidence regions of the state

From: Genetic diversity of the Mycobacterium tuberculosis Complex in San Luis Potosí, México

Variable Incidence region* P†
Low (6.2) Intermediate (17.3) High (33.4) Overall (12.6)
Number of PTB cases 63 83 102 248 ---
Sex      
 Male 40 (63.5) ‡ 47 (56.6) 68 (66.7) 155 (62.5) 0.670
 Female 23 (36.5) 36 (43.4) 34 (33.3) 93 (37.5) 0.861
Median age      
 Years (range) 45 (18–86) 48 (15–80) 55 (16–95) 50 (15–95) 0.031
Occupation      
 Farm worker 15 (23.8) 25 (30.1) 43 (42.2) 83 (33.5) 0.116
 Housewife 18 (28.6) 31 (37.3) 28 (27.5) 77 (31.0) 0.449
 Unemployed 11 (17.5) 12 (14.5) 19 (18.6) 42 (16.9) 0.779
 Employee 12 (19.0) 4 (4.8) 3 (2.9) 19 (7.7) 0.001
 Independent 5 (7.9) 8 (9.6) 7 (6.9) 20 (8.1) 0.819
 Another 2 (3.2) 3 (3.6) 2 (2.0) 7 (2.8) 0.779
Formal education      
 None 13 (20.6) 21 (25.3) 36 (35.3) 70 (28.2) 0.522
 Incomplete primary 21 (33.3) 29 (34.9) 33 (32.4) 83 (33.5) 0.638
 Primary 16 (25.4) 21 (25.3) 20 (19.6) 57 (23.0) 0.951
 Secondary 11 (17.5) 12 (14.5) 11 (10.8) 34 (13.7) 0.192
 College 2 (3.2) 0 (0) 2 (2.0) 4 (1.6) 0.301
Habitat      
 Rural 11 (17.5) 45 (54.2) 88 (86.3) 144 (58.1) < 0.001
 Urban 52 (82.5) 38 (45.8) 14 (13.7) 104 (41.9) < 0.001
Marginalization index      
 Very high 0 (0) 9 (10.8) 0 (0) 9 (3.6) < 0.001
 High 12 (19) 18 (21.7) 102 (100.0) 132 (53.2) < 0.001
 Medium 2 (3.2) 33 (39.8) 0 (0) 35 (14.1) < 0.001
 Low 1 (1.6) 23 (27.7) 0 (0) 24 (9.7) < 0.001
 Very low 48 (76.2) 0 (0) 0 (0) 48 (19.4) < 0.001
Previous history of TB      
 No 59 (93.7) 75 (90.4) 90 (88.2) 224 (90.3) 0.951
 Yes 4 (6.3) 8 (9.6) 12 (11.8) 24 (9.7) 0.549
Contact with TB cases      
 Yes 8 (12.7) 24 (28.9) 29 (28.4) 61 (24.6) 0.086
 No 55 (87.3) 59 (71.1) 73 (28.4) 187 (75.4) 0.449
Concomitant disease      
 None 34 (54.0) 37 (44.6) 50 (49.0) 121 (48.8) 0.741
 Diabetes 20 (31.7) 19 (22.9) 14 (13.7) 53 (21.4) 0.047
 Malnutrition 4 (6.3) 15 (18.1) 22 (21.6) 41 (16.5) 0.061
 Alcoholism 1 (1.6) 7 (8.4) 15 (14.7) 23 (9.3) 0.026
 HIV-AIDS 4 (6.3) 1 (1.2) 0 (0) 5 (2.0) 0.017
 Other 0 (0) 4 (4.8) 1 (1.0) 5 (2.0) 0.082
Acid-fast bacilli smear      
 Positive 56 (88.9) 78 (94.0) 100 (98.0) 234 (94.4) 0.016
 Negative 7 (11.1) 5 (6.0) 2 (2.0) 14 (5.6) 0.584
  1. *Number of cases per 100,000 inhabitants in parenthesis.
  2. χ2. One-way ANOVA, for age difference.
  3. ‡Numbers in parenthesis are percentages between variable categories, except in the median age where they are ranges.