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Table 1 Comparison of selected characteristics between respondents and non-respondents

From: Knowledge, attitude and practices of pediatricians regarding the prevention of oral diseases in Italy

Characteristic Respondents % Non-respondents %
Gender   
   Male 37.7 32.9
   Female 62.3 67.1
  χ2 = 2.27, 1 df, p = 0.13
Age group, years (49.5 ± 6.5) (48.8 ± 6.4)
   ≤40 7.1 7.8
   41–45 19.3 18.5
   46–50 35.7 36.3
   51–55 25.3 25.9
   >55 12.6 11.5
  χ2 for trend = 0.07, 1 df, p = 0.79
Number of years since graduation   
   ≤15 10.5 13.7
   16–20 22.1 22.6
   21–25 32.5 31.9
   26–30 23.7 22.2
   >30 11.2 9.6
  χ2 for trend = 1.78, 1 df, p = 0.18
Practice setting   
   Primary care 81.3 78.2
   Private 10.1 10.9
   Hospital/University 8.6 10.9
  χ2 = 0.81, 2 df, p = 0.66
Number of years in practice (17 ± 7.7) (18.2 ± 6.9)
   ≤10 19.3 15.7
   11–15 25.9 24.5
   16–20 26.4 23.1
   >20 28.4 36.7
  χ2 for trend = 2.77, 1 df, p = 0.1
Number of hours worked per week   
   ≤30 36 34
   31–40 40.8 48.3
   >40 22.2 17.7
  χ2 for trend = 0.28, 1 df, p = 0.6
Number of patients seen in a workday (19.8 ± 8) (20.5 ± 7.8)
   ≤ 10 14.8 12.2
   11–15 21 22.5
   16–20 30.7 31.3
   21–25 14 10.2
   >25 19.5 23.8
  χ2 for trend = 0.45, 1 df, p = 0.5
  1. In brackets the mean and standard deviation