Utilization of access to colorectal cancer screening modalities in low-income populations after medicaid expansion

Table 2 Difference-in-difference analysis of the three colorectal screening strategies (fobt only, sigmoidoscopy only or colonoscopy only) or at least any colorectal screening, n = 893004

Screening modality	Percentage point change		Difference-in- difference estimate	P value
	Expansion states	Non-expansion states
Colonoscopy	16.88 (16.44, 17.32)	14.49 (13.87, 15.11)	2.40 (1.64, 3.15)	< 0.001
Sigmoidoscopy	0.31 (0.20, 0.44)	0.15 (0.001, 0.280)	0.17 (-0.01, 0.35)	0.060
FOBT	2.52 (2.28, 2.76)	1.64 (1.35, 1.94)	0.88 (0.50, 1.26)	< 0.001
CRC screen	18.34 (17.89, 18.80)	15.44 (14.80, 16.08)	2.90 (2.12, 3.69)	< 0.001

Colorectal cancer screen: At least one colorectal screening strategy during the study period. FOBT: Fecal occult blood test; CRC: Colorectal cancer.