Table 3. Difference in Costs of Intervention Activities Between Round 1 and Round 2 of 1 Participant in the Colorectal Cancer Control Program Learning Collaborative^a .

Category	Region 1b				Region 2c
	Round 1 (February 2016–November 2016)	Round 2 (February 2017–January 2018)	Difference Between Round 1 and Round 2	Change, %	Round 1 (September 2016–February 2017)	Round 2 (October 2017–July 2018)	Difference Between Round 1 and Round 2	Change, %
Number of mailings	7,123	6,981	142	2.0	10,943	9,802	1,141	10.4
Number of months	9	11	−2	−22.2	5	9	−4	−80.0
Costs, $
Intervention developmentb	52,154	11,664	40,490	77.6	28,215	9,278	18,937	67.1
Patient recruitment and tracking	10,150	6,438	3,712	36.6	8,112	8,636	−524	−6.5
Incentive payment	5,603	6,352	−749	−13.4	6,004	5,993	11	0.2
Administration and management	86,224	16,180	70,044	81.2	28,206	19,158	9,048	32.1
Evaluation and reporting	21,874	14,371	7,503	34.3	11,983	5,904	6,079	50.7
Total cost	176,005	55,005	121,000	68.7	82,520	48,968	33,552	40.7

^a The objective of the Colorectal Cancer Control Program Learning Collaborative is to work with awardees to analyze implementation, effectiveness, and cost-effectiveness of the evidence-based interventions, supporting activities, and other interventions implemented by the awardees to improve colorectal cancer screening uptake (8,9).

^b The implementation period began with the mailing of the letters, continued as screenings were tracked, and ended when the evaluation period was completed.

^c The intervention development period in Region 1 was from February 2015 through January 2016 (12 months) in Round 1 and November 2016 through February 2017 (4 months) in Round 2. The intervention development period in Region 2 was from March through September 2016 (7 months) in Round 1 and August through October 2017 (3 months) in Round 2.