TABLE 2

Population-based admission rate of bronchiolitis 2002–2014 (per 100 000 infants <24 months)

YearSitesTotal ICU admissions due to respiratory infectionBronchiolitis admissions rate per 100000 population <24 monthsProportion of admitted patients
Paediatric ICUGeneralAllPaediatric ICUAllPaediatric ICUGeneral13-year#General/all (n/n %)AllPaediatric
20029658954962.5 (383)58.5 (358)4.1 (25)62.0 (380)6.5%19.8%19.5%
20039757550851.9 (317)43.6 (266)8.4 (51)49.3 (301)16.1%16.7%15.3%
20049762958359.4 (366)55.0 (339)4.4 (27)58.1 (358)7.4%17.2%17.0%
20059764056860.7 (380)52.4 (328)8.3 (52)56.5 (354)13.7%19.4%18.1%
20069878063782.7 (531)66.5 (427)16.2 (104)72.0 (462)19.6%24.3%22.2%
200791282464178.3 (529)59.7 (403)18.7 (126)62.2 (420)23.8%22.3%19.9%
200891392174782.5 (579)63.5 (446)18.9 (133)64.2 (451)23.0%23.3%21.1%
200991589171276.8 (549)57.8 (413)19.0 (136)62.0 (443)24.8%22.9%20.0%
20109151083811106.5 (766)76.5 (550)30.0 (216)78.8 (567)28.2%26.7%23.3%
20119151308897123.5 (880)80.0 (570)43.5 (310)85.5 (609)35.2%27.8%23.0%
201291716061098167.0 (1206)108.0 (780)59.0 (426)114.5 (827)35.3%34.4%29.0%
201391917391189174.5 (1290)112.9 (835)61.5 (455)120.0 (887)35.3%33.6%28.3%
2014101919691265208.9 (1528)125.3 (917)83.5 (611)138.3 (1012)40.0%37.1%30.7%
β (95% CI)113.65 (86.99–140.32)61.36 (46.65–76.1)11.84 (8.24–15.45)5.83 (3.75–7.91)6.01 (4.37–7.65)6.25 (3.86–8.63)0.03 (0.02–0.03)0.02 (0.01–0.02)0.01 (0.01–0.01)
p-value (for trend)<0.0001<0.0001<0.00010.0001<0.00010.0001<0.0001<0.0001<0.0001

ICU: intensive care unit. #: dataset restricted to units that contributed data to the registry for the entire study period 2002–2014; : two paediatric ICUs that had contributed data to the registry since 2002 merged at the end of 2014 to one new facility.