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Table 3 Crude period-specific IRs and their 95% confidence intervals (CI)

From: Animal tumour registry of two provinces in northern Italy: incidence of spontaneous tumours in dogs and cats

  0 - 18 months 19-36 months
DOG CASES IR CI CASES IR CI
MALIGNANT TUMOURS 550 124 112-138 719 162 147-180
BENIGN TUMOURS 436 98 89-109 804 181 164-201
CAT       
MALIGNANT TUMOURS 184 57 52-64 222 69 63-77
BENIGN TUMOURS 29 9 8-10 59 18 17-20