Table 1.

Summary of important changes occurring across the study sites after randomization.

Changes	Sites randomized to standard implementation					Sites randomized to enhanced implementation with LEAPa
	S1	S2	S3	S4	E1		E2	E3b	E4
Lung cancer screening clinical reminders (for providers)?	Limited	Yes	Limited	Yes	Limited		Yes	Yes	Yes
Screening coordinator for conducting shared decision-making?	No	No	No	No	No		Yes	Yes	Yes
Pack year reminder?	Limited	Yes	Limited	No	Yes		Yes	Yes	Yes

^aLEAP: Learn, Engage, Act, and Process.

^bAfter randomization, this site decided not to participate in LEAP but continued to participate in the overall trial.