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<p>Digital screening may divert lower-risk persons to lower-cost online screening, or offer higher-risk non-responders a more acceptable alternative. Population-based uptake estimates are lacking. We conducted four studies within four weeks by inviting 1700 Londoners (40–74 years, without cardiovascular disease) to a digital Health Check. A six-arm pragmatic unregistered randomised controlled trial (RCT) tested different Short Message Service (SMS) invitations. Uptake varied from 12% (standard SMS) to 20% (shortest SMS, <i>P</i> = 0.009). We tested three sequential reminders (an SMS, a second pragmatic trial [SMS vs postal reminder], and a final SMS). The first SMS reminder increased uptake by +3%. The postal reminder (+7%) was twice as effective as the SMS reminder (+3%, <i>P</i> &lt; 0.0001). The “final reminder” SMS added +7%. Altogether, shorter invites, multi-modal reminders, and a “final reminder” all increased uptake. Adding digital care to in person care may raise uptake from 50 to 60%. Agile evaluations can rapidly improve invitation systems.</p>

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Agile evaluation including two pragmatic trials on the uptake of a digital screening service

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月26日

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  • Taavi Tillmann,
  • Andrew Copas,
  • Paul Stokes,
  • Nick Udell,
  • Jo Stead,
  • Jin Lim,
  • Gene Libow

摘要

Digital screening may divert lower-risk persons to lower-cost online screening, or offer higher-risk non-responders a more acceptable alternative. Population-based uptake estimates are lacking. We conducted four studies within four weeks by inviting 1700 Londoners (40–74 years, without cardiovascular disease) to a digital Health Check. A six-arm pragmatic unregistered randomised controlled trial (RCT) tested different Short Message Service (SMS) invitations. Uptake varied from 12% (standard SMS) to 20% (shortest SMS, P = 0.009). We tested three sequential reminders (an SMS, a second pragmatic trial [SMS vs postal reminder], and a final SMS). The first SMS reminder increased uptake by +3%. The postal reminder (+7%) was twice as effective as the SMS reminder (+3%, P < 0.0001). The “final reminder” SMS added +7%. Altogether, shorter invites, multi-modal reminders, and a “final reminder” all increased uptake. Adding digital care to in person care may raise uptake from 50 to 60%. Agile evaluations can rapidly improve invitation systems.