Ten years of tuberculosis intervention in Greenland – has it prevented cases of childhood tuberculosis?

Figures & data

Table I. TB disease among children in Greenland, 1990 to 2010, stratified by period

Period^a	TB cases	IRR^b	95% CI^c	p^d	IR^e
1990–1994	23	0.47	(0.28–0.75)	0.002	29.0 (18.7,42.5)
1995–1999	64	1 (Ref.)	–	–	75.8 (58.7,95.9)
2000–2006	93	1.05	(0.76–1.45)	0.78	81.6 (66.1,99.3)
2007–2010	29	0.62	(0.39–0.95)	0.03	49.0 (33.3,69.1)
Total	209			0.0004

^aAdjusted for sex, vaccination period and age with splines.

^bIncidence rate ratios.

^cConfidence intervals.

^dTest for homogeneity.

^eIncidence rates per 100,000 person years.

Table II. Factors associated with TB disease among Greenlandic children, 1990–2010

	TB cases	IRR (95% CI)	p
Total	209
Sex^a
Girls	119	1.37 (1.04–1.80)	0.0250
Boys	90	1
Born in BCG vaccination period^a
Yes	111	0.54 (0.41–0.72)	<0.0001
No	98	1
Age^b
0 years	10	1
1–5 years	59	1.08 (0.58–2.24)	0.8253
6–10 yeas	64	1.11 (0.59–2.30)	0.7632
11–15 years	76	1.42 (0.77–2.93)	0.3045
Age trend^b		1.04 (1.01–1.07)	0.02

^aAdjusted for period, sex, vaccination period and age with splines.

^bAdjusted for period, sex and vaccination period.