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Table 2 Prevalence (%) of positive skin prick test by age group and sex in 1994 and 2009, respectively; difference (p-value) by study year

From: Increase in sensitization to common airborne allergens among adults – two population-based studies 15 years apart

   Age group Sex  
Allergen   20-29 y p-value 30-39 y p-value 40-49 y p-value 50-60 y p-value Men p-value Women p-value
Birch 1994 23.4 0.124 19.3 0.804 13.5 0.068 6.1 0.281 13.5 0.089 13.0 0.182
  2009 37.5 20.7 21.5 9.2 19.3 17.4
Timothy 1994 27.7 0.050 17.4 0.562 8.6 0.002 6.7 0.037 13.9 0.024 9.8 0.001
  2009 46.4 20.7 21.5 13.5 21.9 20.4
Mugwort 1994 2.1 0.398 0.9 0.051 8.0 0.028 1.2 0.012 3.8 0.620 3.3 0.286
  2009 5.4 5.7 2.2 6.5 4.7 5.2
Cat 1994 23.4 0.060 22.9 0.271 15.3 0.016 10.4 0.018 16.9 0.001 15.4 0.060
  2009 41.4 29.9 26.7 19.5 30.0 22.2
Dog 1994 17.0 0.005 20.2 0.301 12.3 0.001 8.5 0.016 13.5 <0.001 13.0 0.012
  2009 42.9 26.4 32.5 17.3 28.8 21.7
Horse 1994 14.9 0.288 13.8 0.636 8.6 0.755 2.4 0.107 8.9 0.329 7.7 0.699
  2009 23.2 11.5 9.6 5.9 11.6 8.7
D.pteronyssinus 1994 2.1 0.142 10.1 0.029 4.9 0.851 5.5 0.048 5.9 0.038 6.1 0.528
  2009 8.9 2.3 4.4 1.6 2.1 4.8
D.farinae 1994 8.5 0.940 5.5 0.026 4.3 0.544 5.5 0.006 5.5 0.109 5.3 0.037
  2009 8.9 0 3.0 0.5 2.6 1.7
Cladosporium 1994 8.5 0.526 2.8 0.430 2.5 0.552 3.0 0.191 3.0 0.375 3.7 0.199
  2009 5.4 1.1 1.5 1.1 1.7 1.7
Alternaria 1994 4.3 0.858 3.7 0.266 4.3 0.158 1.8 0.065 4.6 0.032 2.0 0.292
  2009 3.6 1.1 1.5 0 1.3 0.9
Any allergen 1994 55.3 0.580 36.7 0.504 35.6 0.153 26.2 0.612 34.2 0.078 35.0 0.722
  2009 60.7   41.4   43.7   28.6   42.1   36.5