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Table 3 Distribution of HPV positivity and types by age

From: Prevalence of HPV high and low risk types in cervical samples from the Italian general population: a population based study

   <25* 25-34 35-44 45-54 55-64 All§
   N % N % N % N % N % N %
All   46 100.0 866 100 1294 100 1141 100 516 100 3817 100
  HR+ only 6 13.0 108 12.5 105 8.1 67 5.9 13 2.5 293 7.7
  LR+ only 4 8.7 34 3.9 34 2.6 26 2.3 9 1.7 103 2.7
  HR & LR+ 2 4.3 40 4.6 12 0.9 3 0.3 2 0.4 57 1.5
types              
  6 0 0.0 15 1.7 4 0.3 2 0.2 3 0.6 24 0.6
  11 0 0.0 2 0.2 3 0.2 4 0.4 2 0.4 11 0.3
  16 5 10.9 48 5.5 37 2.9 21 1.8 2 0.4 108 2.8
  18 1 2.2 12 1.4 4 0.3 0 0.0 2 0.4 18 0.5
  26 0 0.0 2 0.2 1 0.1 0 0.0 1 0.2 4 0.1
  31 2 4.3 15 1.7 15 1.2 6 0.5 5 1.0 41 1.1
  33 1 2.2 8 0.9 8 0.6 3 0.3 0 0.0 19 0.5
  35 0 0.0 7 0.8 5 0.4 4 0.4 2 0.4 18 0.5
  39 0 0.0 7 0.8 8 0.6 2 0.2 0 0.0 17 0.4
  40 0 0.0 2 0.2 1 0.1 1 0.1 0 0.0 4 0.1
  42 1 2.2 5 0.6 3 0.2 1 0.1 0 0.0 9 0.2
  43 0 0.0 4 0.5 1 0.1 0 0.0 0 0.0 5 0.1
  44 0 0.0 0 0.0 1 0.1 0 0.0 0 0.0 1 0.0
  45 0 0.0 3 0.3 4 0.3 6 0.5 1 0.2 14 0.4
  51 2 4.3 15 1.7 10 0.8 6 0.5 1 0.2 32 0.8
  52 0 0.0 11 1.3 8 0.6 4 0.4 0 0.0 23 0.6
  53 0 0.0 11 1.3 5 0.4 4 0.4 1 0.2 21 0.6
  54 0 0.0 0 0.0 0 0.0 1 0.1 1 0.2 2 0.1
  56 0 0.0 10 1.2 7 0.5 7 0.6 0 0.0 24 0.6
  58 0 0.0 8 0.9 10 0.8 3 0.3 1 0.2 22 0.6
  59 0 0.0 6 0.7 7 0.5 3 0.3 0 0.0 16 0.4
  66 1 2.2 11 1.3 12 0.9 1 0.1 0 0.0 24 0.6
  68 0 0.0 5 0.6 4 0.3 2 0.2 0 0.0 11 0.3
  70 1 2.2 1 0.1 2 0.2 2 0.2 0 0.0 5 0.1
  73 0 0.0 6 0.7 0 0.0 1 0.1 0 0.0 7 0.2
  81 0 0.0 0 0.0 1 0.1 1 0.1 1 0.2 3 0.1
  82 0 0.0 1 0.1 1 0.1 2 0.2 0 0.0 4 0.1
not typed             
  HR+ 1 2.2 11 1.3 8 0.6 11 1.0 4 0.8 34 0.9
  LR+ 2 4.3 21 2.4 23 1.8 17 1.5 6 1.2 67 1.8
co-infections             
  2 types 3 6.5 39 4.5 26 2.0 10 0.9 5 1.0 80 2.1
  3 types 0 0.0 6 0.7 6 0.5 2 0.2 1 0.2 15 0.4
  4 types 1 2.2 1 0.1 1 0.1 0 0.0 0 0.0 2 0.1
  1. * these cases are excluded from analyses; four women over 65 were all negative for HPV
  2. § excluding <25 years.
  3. HR: High Risk; LR: Low Risk