Is Universal Screening Necessary? Incidence of Tuberculosis among Tibetan Refugees Arriving in Calgary, Alberta

Table 2

Associations between demographic characteristics and diagnosis of LTBI.

	Number with LTBI	value
Age less than 30 years	51/119
Age 30 years or older	29/44
Male	45/83
Female	35/80
Residence in camp	49/106
No/unknown camp residence	31/57
Smoker or prior smoker	16/25
Never smoked	64/138
Abnormal chest radiograph	39/68
Normal chest radiograph	41/95
Family history of TB	2/5
No family history	78/158

1-sided Fisher’s exact test.