Table 1: Demographic characteristics of cases of lower respiratory tract infection in infants who resided in the Canadian Arctic and were admitted to hospital in 2009, by region
CharacteristicRegion; subregionp value for comparison between all regions*p value for NWT v. KTR, KQR, QIR, NK*
NWTNUNKAll regionsAll regions excluding NWT
OverallKTRKQRQIR
No. of births in 200971187712326349125018381127--
No. of admissions for LRTI28206417392114348320
Male sex, no. (%) of admissions20 (71.4)92 (44.7)14 (34.1)38 (52.0)40 (43.5)63 (55.3)175 (50.3)155 (48.4)0.020.02
Age at admission, median (interquartile range), d147 (84-168)109.5 (53-202)168 (65-197)82 (44-168)90.5 (44-223)136 (69-222)114.5 (55.8-208)114.5 (53-208)0.030.11
Underlying condition, no. (%) of admissions
Any underlying condition3 (10.7)44 (21.4)3 (7.3)14 (19.2)27 (29.3)23 (20.2)70 (20.1)67 (20.9)0.030.20
< 36 weeks' gestation2 (7.1)42 (20.4)2 (4.9)13 (17.8)27 (29.3)21 (18.4)65 (18.7)63 (19.7)0.0060.10
Cardiac, respiratory07 (3.4)1 (2.4)1 (1.4)5 (5.4)7 (6.1)14 (4.0)14 (4.4)0.500.65
Neurologic, congenital1 (3.6)2 (1.0)01 (1.4)1 (1.1)03 (0.9)2 (0.6)0.400.22

Note: KQR = Kivalliq Region, KTR = Kitikmeot Region, LRTI = lower respiratory tract infection, NWT = Northwest Territories, NK = Nunavik, NU = Nunavut, QIR = Qikiqtaaluk Region.

*For comparison of proportions across regions, χ2 test was used; for comparison of age, nonparametric test was used; for comparison of admission for lower respiratory tract infection, Poisson regression was used.

†Some infants had more than 1 underlying condition.