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Table 1 Characteristics of TST positive and negative contacts

From: Long term follow-up of drug resistant and drug susceptible tuberculosis contacts in a Low incidence setting

 

DS-TB (%)

HMR-TB (%)

MDR-TB (%)

p-value vs DS-TB

HMR-TB

MDR-TB

Source Cases

2895

96

28

  

Household contacts

7309

249

89

  

Median contacts/source

3

3

3

<0.001^

0.839^

Source Characteristic

Source Smear Positive

4709 (64)

139 (56)

57 (64)

0.005

0.939

Contact Characteristics

Demographics

Mean Age (Sd)

32.9 (21.2)

28.9 (20.4)

26.7 (19.1)

  

Age Over 18

5489 (75)

170 (68)

57 (64)

0.013

0.015

Male Gender

3521 (48)

112 (45)

43 (48)

0.32

0.98

Birth Country

Canadian born

3163 (43)

87 (35)

60 (67)

  

Foreign born

3609 (49)

154 (62)

23 (26)

  

Unknown

536 (7)

8 (3)

6 (7)

  

BCG status*

Positive

3340 (46)

132 (53)

44 (49)

  

Negative

2977 (41)

94 (38)

42 (47)

  

Unknown

991 (14)

23 (9)

3 (3)

  
  1. ^Wilcoxon rank sum test.
  2. * 22% of values were calculated using age, country of origin and information from http://www.bcgatlas.org.