Table 6. Tuberculin skin test results in contacts of “cases” that died before treatment (n = 15) and their matched (for age, sex, population group and smear status) “controls” (n = 30).

Results	Contacts of “Cases”	Contacts of “Controls”	P-value
No. Contacts
Close	225	301
Casual/Other	241	408
Total	466	709
No. Contacts Completely Assessed (% of total)
Close	81.4	90.5	0.18
Casual/Other	74.2	82.3	0.31
Total	76.3	86.2	0.10
No. new positive TSTs among contacts that were completely assessed (% of completely assessed)*
Close	19.2	16.7	0.65
Casual/Other	5.5	17.7	0.07
Total	12.2	14.9	0.45
No. TST converters among contacts that were completely assessed (% of completely assessed)* †
Close	1.8	2.2	0.79
Casual/Other	1.6	1.6	0.96
Total	2.7	2.6	0.96

Abbreviations: TST tuberculin skin test

* New positive TSTs and TST converters were defined according to the Canadian TB Standards, 7^th Edition

† TST converters include those contacts diagnosed with prevalent active TB