Participants included the 100 associates who started the PHAP in August 2012 and completed the program in August 2014.

We administered surveys at 3 distinct time points: program completion (administered June 2014), year 1 (administered August 2015), and year 3 (administered August 2017; Office of Management and Budget control number: 0920–1078; expiration date: March 31, 2021). Each survey was accessed through a Web-enabled link embedded in an e-mail. Participants were tracked over time via a unique identification number. Participation was voluntary.

Surveys included up to 37 closed-ended and 10 open-ended items. Surveys used conditional branching; therefore, the actual number of items responded to by participants varied. All surveys collected information about participants’ professional status—specifically, whether they were employed, enrolled in an educational program, or pursuing something else. For those reporting that they were employed, respondents were asked to describe their work in terms of employer sector (i.e., federal government, nonfederal government, or nongovernment) and focus area (i.e., public health, health care, or other). The items presented were identical across all surveys.

We completed data analysis in June 2018.⁹ We calculated descriptive statistics in SPSS. Response rates were as follows: 100% at program completion (n = 100), 89% at year 1 (n = 89), and 83% at year 3 (n = 83). Only those who participated in all 3 surveys (76 of 100) were included in the final data set (76% response rate).

At program completion, 57% of alumni (43 of 76) were employed. This percentage increased to 67% (51 of 76) at year 1 and to 74% (56 of 76) at year 3. These percentages include both alumni who were employed only and alumni who were simultaneously employed and enrolled in an educational program. At program completion, 28% (21 of76) of alumni were exclusively enrolled in an educational program. This percentage increased to 30% (23 of 76) at year 1 and decreased to 21% (16 of 76) at year 3 (Table 1).

At program completion, 100% (43 of 43) of employed alumni reported that their jobs were focused in public health. This percentage declined to 86% (44 of 51) at year1 and 68% (38 of 56) at year 3.

At program completion, 70% (30 of 43) of alumni who were employed in public health were working for the federal government. Most worked at the CDC (29 of 30); 1 alumnus worked at the US Department of Agriculture. The percentage of alumni employed by the federal government decreased to 57% (25 of 44) at year 1 and to 32% (12 of 38) at year 3. Nonfederal governmental public health employment (e.g., employment at a state or local health department) increased over the 3 time points, from 19% (8 of 43) at program completion to 23% (10 of 44) at year 1 and to 55% (21 of 38) at year 3. Public health employment at NGOs (e.g., nonprofit agencies, for-profit companies) fluctuated. At program completion, 12% of alumni (5 of 43) were employed by an NGO. This percentage increased to 20% (9 of 44) at year 1 and decreased to 13% (5 of 38) at year 3.

This study described the career trajectories of associates from 1 PHAP cohort over 3 years. Results show that most of the alumni were employed at each time point, with the overall percentage of those employed increasing over the 3 years. At each time point, most employed alumni reported working in public health, but this percentage decreased over time. At the 3-year mark, approximately a third of the alumni (32%) had left public health employment. This is consistent with the rate of turnover (31%) found within the broader public health workforce, according to a national survey of state public health agency employees in 2017.¹⁰ Given that most alumni working in public health at program completion and year 1 were employed by the federal government, administrative factors unique to the federal government may have influenced turnover. One explanation could be the type of federal hiring mechanism—a temporary appointment limited to 5 years—used initially to hire this cohort. This type of appointment is used for short-term work assignments with an expected end date. When the appointment expired, alumni reentered the job market.

These findings are preliminary, and further inquiry is warranted. The alumni in this study will be invited to participate in another survey 5 years after completing PHAP. It will be important to examine whether the percentage employed in public health continues to decline or whether those who were exclusively enrolled in school during previous survey time points add to the public health workforce by year 5. Additionally, career trajectories of other cohorts are being tracked with these same methods. For these cohorts, it will be important to examine CDC employment. Alumni who completed PHAP in 2015 and beyond were hired with a different hiring authority (Pathways),¹¹ allowing for conversion to permanent federal positions immediately post-PHAP, which was not possible for those who graduated in 2014. This hiring difference may result in a higher percentage of alumni employed by CDC moving forward.

This study had some limitations. We included only 1 cohort. All data were self-reported and not validated by other sources. The sample was adjusted to include only those alumni who participated in all surveys.

Service learning programs like PHAP are effective at recruiting early career professionals to public health. The extent to which PHAP is effective at retaining workers in public health after the program appears most promising immediately following or in the short term after the program concludes. The extent to which workers are retained in the longer term requires further study.