Volume 17, Number 6—June 2011
Multiple Introductions of Multidrug-Resistant Tuberculosis into Households, Lima, Peru
|Factor||Introduction, n = 10†||No introduction, n = 91||p value|
|No. persons||7.5 (6–8)||8 (7–11)||0.18|
|Persons per bedroom||2.6 (1.7–2.7)||2.4 (1.75–5)||0.43|
|Homes of substandard quality‡||1/9 (11)||23/64 (36)||0.44|
|Mean age of household members, y||28 (23–32)||26 (21–30)||0.39|
|Duration between first and last isolate obtained from household, d||389 (167–724)||345 (204–599)||0.92|
*Values are median (interquartile range) or no. positive/no. tested (%). MDR TB, multidrug-resistant tuberculosis.
†Households classified as having repeated MDR TB introductions for these analyses are indicated in Table A1 (www.cdc.gov/EID/content/17/6/969-appT1.htm).
‡Substandard housing was defined as a dwelling with a dirt floor; walls made of straw matting, plastic, or plywood; a roof made of straw matting, plastic, or plywood; or no access to water in the home (data were not available for all households).