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Table 4 Cost-effectiveness of improving screening rates by sending out patient reminders by population size

From: Effect size and cost-effectiveness estimates of breast and cervical cancer screening reminders by population size through complete enumeration of Japanese local municipalities

    Population (n) Estimated number of eligible subjects a(n) Cost of posting a reminder to one person(US dollarsb/person) Cost of posting reminders to all subjects (thousand US dollarsb) Attendance rate improvement attributed to patient remindersc(%) Increase in the number of screening tests attributed to patient reminders (n) Incremental cost per additional screening (US dollarsb) Cost of increasing attendance rate by 1% (US dollarsb)
Breast cancer screening Population fewer than 50 000 25% 6,917 2,041 1.5 3.1 1.5 31 100 2,041
Median 14,926 4,403 1.5 6.6 1.5 66 100 4,403
75% 28,501 8,408 1.5 12.6 1.5 126 100 8,408
Population between 50 000 and 100 000 25% 57,566 16,982 1.5 25.5 2.76 469 54 9,229
Median 67,181 19,818 1.5 29.7 2.76 547 54 10,771
75% 80,255 23,675 1.5 35.5 2.76 653 54 12,867
Cervical cancer screening Population fewer than 50 000 25% 6,917 2,041 1.5 3.1 1.01 21 149 3,030
Median 14,926 4,403 1.5 6.6 1.01 44 149 6,539
75% 28,501 8,408 1.5 12.6 1.01 85 149 12,487
Population between 50 000 and 100 000 25% 57,566 16,982 1.5 25.5 2.25 382 67 11,321
Median 67,181 19,818 1.5 29.7 2.25 446 67 13,212
75% 80,255 23,675 1.5 35.5 2.25 533 67 15,783
  1. aBreast cancer screening is offered to women older than 40 years (29.5% of the population), and cervical cancer screening to women older than 20 years (42.3% of the population).
  2. b1 US dollar =100 yen.
  3. cAttendance rate improvement attributed to patient reminders was calculated in Table 3.