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Table 3 Analyses of temporal clustering of neuroblastic tumours at ages < 18 months

From: Temporal clustering of neuroblastic tumours in children and young adults from Ontario, Canada

Type of analysis

^β1 (SE)

One-sided p value

Within months

Within quarters

Within years

Within full period

Between fortnights

−0.271 (0.19) p = 0.926

− 0.103 (0.08) p = 0.910

− 0.019 (0.05) p = 0.632

−0.006 (0.05) p = 0.537

Between months

 

−0.05 (0.12) p = 0.656

0.09 (0.08) p = 0.144

0.08 (0.07) p = 0.141

Between quarters

  

0.37 (0.15) p = 0.014

0.34 (0.13) p = 0.007

Between years

   

0.35 (0.27) p = 0.106

  1. 1 ^β is the one-step estimate of β, the extra-Poisson variation, calculated in the same way as originally described by Muirhead [16]