TABLE 2

Demographic and clinical characteristics of paediatric tuberculosis (TB) cases by population group in Alberta, 1990–2014

CharacteristicsPopulation groupTotalp-value#
RFNCBO-CBCBO-FBFB
Cases56184359176
Age years0.001
 <523 (41)10 (56)29 (67)16 (27)78 (44)
 5–1433 (59)8 (44)14 (33)43 (73)98 (56)
Sex0.09
 Female25 (45)10 (56)30 (70)35 (59)100 (57)
 Male31 (55)8 (44)13 (30)24 (41)76 (43)
Disease site0.03
 Pulmonary51 (91)14 (78)36 (84)41 (70)142 (81)
 Extrapulmonary5 (9)4 (22)7 (16)18 (31)34 (19)
Method of detection<0.001
 Contact tracing52 (93)14 (78)27 (63)15 (25)108 (61)
 Symptoms4 (7)4 (22)14 (33)37 (63)59 (34)
 Other screening+0 (0)0 (0)2 (5)7 (12)9 (5)
Culture status0.47
 Positive22 (39)6 (33)16 (37)34 (58)78 (44)
 Negative32 (57)9 (50)24 (56)25 (42)90 (51)
 Unknown§2 (4)3 (17)3 (7)0 (0)8 (5)

Data are presented as n or n (%), unless otherwise stated. CBO-CB: Canadian-born “other” with Canadian-born parents; CBO-FB: Canadian-born “other” with foreign-born parents; RFN: registered First Nations; FB: foreign born. #: Pearson's Chi-squared test or Fisher's exact test if cells contain values <5; : Extrapulmonary includes all cases with an International Classification of Diseases Ninth Revision (ICD-9) code of 013 (TB of meninges and the central nervous system) and/or 018 (miliary TB) with or without disease in other sites. It also includes the single ICD-9 codes 014 (TB of the intestines, peritoneum and mesenteric glands), 015 (TB of the bones and joints), 016 (TB of the genito-urinary system) and 017 (TB of other organs); +: other screening includes immigration medical evaluations, international adoptee screening and incidental findings; §: unknown means that no diagnostic specimens were submitted.