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Table 1 Demographics and rates of AAI prescriptions of patients admitted for anaphylaxis from 2009–2019

From: Increasing incidence of anaphylaxis in Hong Kong from 2009 to 2019—discrepancies of anaphylaxis care between adult and paediatric patients

  2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Total patients 158 172 153 157 202 322 327 321 340 351 351
Total admissions 164 180 162 161 209 329 341 330 357 362 366
Male gender 92 (58.2%) 106 (61.6%) 91 (59.5%) 78 (49.7%) 108 (53.5%) 159 (49.4%) 157 (48.0%) 149 (46.5%) 171 (50.3%) 178 (50.7%) 184 (52.4%)
Median age (IQR) 47 (38) 45 (32) 45 (31) 46 (32) 49 (35) 45 (32) 47 (1–95) 51 (1-90) 44 (1–98) 45 (1–98) 39 (1–97)
Paediatric (< 18 years) 27 (17.1%) 32 (18.6%) 21 (13.7%) 20 (12.7%) 32 (15.8%) 60 (18.6%) 58 (17.7%) 49 (15.3%) 69 (20.3%) 73 (20.8%) 86 (24.5%)
Adult (≥ 18 years) 131 (82.9%) 140 (81.4%) 132 (86.3%) 137 (87.3%) 170 (84.2%) 262 (81.4%) 269 (82.3%) 272 (84.7%) 271 (79.7%) 278 (79.2%) 265 (75.5%)
AAI prescriptions
 Total patients prescribed AAI 8 (5.1%) 12 (7.0%) 14 (9.2%) 18 (11.5%) 29 (14.4%) 41 (12.7%) 39 (11.9%) 35 (10.9%) 51 (15.0%) 77 (21.9%) 98 (27.9%)
Paediatric 7 (25.9%) 8 (25.0%) 10 (47.6%) 9 (45.0%) 15 (46.9%) 32 (53.3%) 30 (51.7%) 21 (42.8%) 35 (50.7%) 46 (63.0%) 55 (64.0%)
Adult 1 (0.8%) 4 (2.9%) 4 (3.0%) 9 (6.6%) 14 (8.2%) 9 (3.4%) 9 (3.3%) 14 (5.1%) 16 (5.9%) 31 (11.2%) 43 (16.2%)