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Table 2 Changes per quarter (average of 2017–2019) in relation to 2020, RRD: relative rate difference ( incidence rate ratio) in percent

From: Collateral effects of the SARS-CoV-2 pandemic on oncologic surgery in Bavaria

Type of surgery 17–19/1 2020/1 RRD% (p-value) 17–19/2 2020/2 RRD% (p-value) 17–19/3 2020/3 RRD% (p-value) 17–19/4 2020/4 RRD% (p-value)
Upper GI 47 46 − 3% (0.445) 45 31 − 31% (0.050) 48 52 7 (0.360) 40 39 − 3.7% (0.441)
Colorectal 98 99 0.4% (0.490) 83 73 − 13% (0.200) 104 73 − 31% (0.008) 87 58 − 34% (0.007)
HPB 75 95 + 30% (0.068) 82 63 − 24% (0.053) 78 92 15 (0.154) 78 65 − 18% (0.129)
Peritoneal 4 3 − 25% (0.360) 4 2 − 50% (0.224) 4 4  ± 0 (0.495) 4 6 32% (0.278)
Endocrine 8 12 33% (0.195) 10 8 − 25% (0.318) 11 6 − 44% (0.115) 12 0
All surgeries 232 256 + 9% (0.156) 221 177 − 20% (0.011) 247 235 − 6% (0.263) 218 169 − 23% (0.005)
  1. Means were rounded to the nearest whole number