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Table 1 Distribution of emergency department visits and hospitalizations due to bronchiolitis, 2010–2014

From: Epidemiology of bronchiolitis: a description of emergency department visits and hospitalizations in Puerto Rico, 2010–2014

  Years, n (%)
  2010 2011 2012 2013 2014 P value
Emergency department visits
Total 12,515 10,609 10,403 8549 6810  
Due to bronchiolitis 434 (3) 553 (5) 525 (5) 423 (5) 346 (5) < 0.001
Sexa
Male 223 (3) 316 (6) 296 (5) 247 (5) 206 (6) 0.15
Female 211 (4) 237 (5) 229 (5) 176 (5) 140 (5)  
Age distributionb
0 to 3 months 44 (6) 35 (7) 51 (11) 28 (8) 28 (9) 0.116
3.1 to 6 months 96 (10) 137 (14) 101 (12) 84 (13) 67 (11)  
6.1 to 9 months 94 (6) 119 (9) 121 (9) 89 (9) 74 (9)  
9.1 to 12 months 83 (5) 89 (6) 86 (6) 76 (6) 50 (6)  
12.1 to 24 months 117 (2) 173 (3) 166 (3) 146 (3) 127 (3)  
Hospitalizations
Total 3624 3052 2604 2467 2086  
Due to bronchiolitis 941 (26) 1209 (40) 1076 (41) 969 (39) 791 (38) < 0.001
  1. aPercentage is based on annual proportion of bronchiolitis emergency visits among total emergency visits per sex
  2. bPercentage is based on annual proportion of bronchiolitis emergency visits among total emergency visits per age group in months