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Table 4 Age contribution of cases in the periods 1997–98 and 2000–02 (both sexes)

From: Incidence of human brucellosis in a rural area in Western Greece after the implementation of a vaccination programme against animal brucellosis

  1997–1998 2000–2002
Age groups Cumulative frequency Cumulative percent (%) Cumulative frequency Cumulative percent (%)
0–9 6 5 1 3
0–19 17 14 3 10
0–29 35 28 7 23
0–39 49 40 9 30
0–49 67 54 17 57
0–59 84 68 21 70
0–69 105 85 25 83
0–80 123 100 30 100
p >0.05 (Kolmogorov-Smirnov test)     
  1. * Poisson regression ** before vaccination *** after vaccination