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Table 1 Breakdown of the type of endoscopy data collected by each of the eight study sites submitting routinely collected data and the earliest time point with data from that site.

From: Unmeasured improvement work: the lack of routinely collected, service-related data in NHS endoscopy units in England involved in "modernisation"

Site type No. referrals Activity No. patients waiting No. lost slots Earliest time period with data
Intervention No Yes Yes No Jan-03
  No No Yes No Jan-03
  No Yes No No Jan-03
Control Yes Yes Yes Yes Dec-03
  Yes Yes Yes Yes Dec-03
  Yes Yes No Yes Apr-04
  Yes Yes Yes No Dec-03
  No No Yes No Apr-04