Research Article
Infectivity of Mycobacterium tuberculosis Genotypes and Outcome of Contact Investigation in Classroom in Guangxi, China
Table 1
Characteristics of index cases by genotypes of M.tb (N=117).
| | Variable | Genotype of index case [n (%)] | P-value (Chi-squared Test) | | Beijing (n=7) | Non-Beijing (n=9) | Unknown (n=101) |
| | School type | | | | | | Middle school | 3 (6.7) | 2 (4.4) | 40 (88.9) | 0.701 | | High school | 4 (5.6) | 7 (9.7) | 61 (84.7) | | | Sex | | | | | | Male | 0 (0) | 8 (14.5) | 47 (85.5) | 0.001 | | Female | 7 (11.3) | 1 (1.6) | 54 (87.1) | | | Ethnicity | | | | | | Han | 5 (7.9) | 5 (7.9) | 53 (84.1) | 0.666 | | Others | 2 (3.7) | 4 (7.4) | 48 (88.9) | | | BCG scar | | | | | | Absent | 3 (7) | 4 (9.3) | 36 (83.7) | 0.768 | | Present | 4 (5.4) | 5 (6.8) | 65 (87.8) | | | Sputum smear status | | | | | | Negative | 5 (6.8) | 5 (6.8) | 64 (86.5) | 0.839 | | Positive | 2 (4.7) | 4 (9.3) | 37 (86) | | | Cavity on chest | | | | | | No | 4 (4.8) | 6 (7.2) | 73 (88) | 0.61 | | Yes | 3 (8.8) | 3 (8.8) | 28 (82.4) | |
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