Table 3

Scenarios for various assumptions used in the sample size calculations

AssumptionsAll cancers (based on lung cancer)All cancersAll cancersAll cancersRestricting to only 90th centile delaysRestricting to only 90th centile delays
Median (days)141460606060
Range (days)0–600–1000–3650–10014–10014–365
N of cancers per step per cluster999911
Minimum detectable difference (days)25134939
NotesAllowing greater rangeLower upper value for Primary Care IntervalMinimum set to median of all cancersMin set to median of all cancers, but increased upper range