Federal Political Contribution Characteristics of Radiation Oncologists in the United States from 2003 to 2018.

<bold>Purpose: </bold>The health care industry has many stakeholders who seek relationships within government to ensure certain interests are considered in the legislative process. This study characterized the federal political contributions of US radiation oncologists (ROs).<bold>Methods and Materials: </bold>Public finance data from the Federal Election Commission (FEC) containing self-identified ROs' contributions to a federal candidate or committee were obtained from 2003 to 2018. Contribution recipients were classified as a political action committee (PAC) or a presidential, Senate, or House candidate. Political parties of recipients were based on FEC designations. For PACs, political parties of recipients were based on spending patterns to political parties in each 2-year election cycle or, when unavailable, overall spending patterns of greater than 50% to 1 political party, as detailed by the Center for Responsive Politics. Data were analyzed temporally, and Spearman's rho was used to assess trends.<bold>Results: </bold>From 2003 to 2018, the FEC reported a total of 31,646,000 federal political contributions. Exactly 4617 federal political contributions were made from 1021 unique self-identified ROs, totaling $3,350,747. The number of ROs making contributions ranged from 56 in 2005 to 600 in 2016 (mean, 289 ± 191.4 ROs yearly), with a mean annual contribution of $209,422. Of all RO dollars, 61.5% went to Democrats, 37.5% to Republicans, and 1.0% to third-party candidates. Most RO dollars (81.0%) went to PACs rather than candidates, with the majority of those PAC dollars (50.2%) directed toward the American Society for Radiation Oncology Political Action Committee. There was a positive annual trend in number of donors by year (ρ = 0.83, P < .0001) as well as RO contributions to the House (ρ = 0.58, P < .02), Senate (ρ = 0.58, P < .02), Democrats (ρ = 0.81, P < .001), Republicans (ρ = 0.66, P < .006), third-parties (ρ = 0.87, P < .001), PACs (ρ = 0.85, P < .0001), and overall (ρ = 0.8, P < .001). There was not a significant trend in contributions to presidential candidates (ρ = 0.71, P = .06).<bold>Conclusions: </bold>ROs' federal political contributions have significantly increased over the last decade and a half. This growth overwhelmingly represents contributions to specialty-focused PACs and both Democratic and Republican congressional candidates. [ABSTRACT FROM AUTHOR]