Table 1:

Incidence rate ratios of 10 cancers in Alberta (all stages combined) during state of emergency, compared with the incidence rate before the COVID-19 pandemic, and the monthly recovery rate after the state of emergency

Time periodIRR (95% CI) of cancer type
BladderBreastColorectalKidneyNon-Hodgkin lymphoma
SOE0.87 (0.72–1.03)0.67 (0.59–0.76)0.64 (0.56–0.74)0.92 (0.72–1.16)0.98 (0.81–1.18)
PostSOE1.01 (0.97–1.05)1.10 (1.06–1.13)1.08 (1.04–1.12)1.00 (0.94–1.06)0.96 (0.92–1.00)
LungMelanomaProstateUterineCervical
SOE0.93 (0.83–1.04)0.57 (0.47–0.69)0.64 (0.56–0.73)0.86 (0.70–1.06)1.14 (0.75–1.75)
PostSOE1.02 (0.99–1.05)1.09 (1.05–1.14)1.08 (1.05–1.12)1.04 (0.99–1.09)0.97 (0.87–1.07)
  • Note: CI = confidence interval, IRR = incidence rate ratio, PostSOE = estimated as the exponent of β4, SOE = state of emergency, estimated as the exponent of β3.