. 2021 Dec 22;4(12):e2134282. doi: 10.1001/jamanetworkopen.2021.34282

Table 2. Yearly OOPC Differences.

Cancer group	Difference in differences^a		Triple difference in differences^b
Cancer group	Incremental yearly OOPCs (95% CI), $	P value	Incremental yearly OOPCs (95% CI), $	P value
Control	1 [Reference]		1 [Reference]
Breast	714.68 (664.91-764.45)	<.001	1683.36 (1576.66-1790.07)	<.001
Colorectal	361.41 (294.34-428.48)	<.001	1420.06 (1232.31-1607.80)	<.001
Lung	475.51 (340.16-610.86)	<.001	467.25 (130.13-804.37)	.007
Other	90.51 (74.22-106.79)	<.001	550.87 (514.75-586.99)	<.001

Abbreviation: OOPC, out-of-pocket cost.

^{^a}

Difference in differences in yearly OOPCs paid by patients with cancer relative to patients without cancer.

^{^b}

Triple difference in differences in yearly OOPCs paid by patients with cancer enrolled in high-deductible health plans relative to traditional health plans.