Leveraging Limited Resources Through Cross-Jurisdictional Sharing: Influences on Breastfeeding Rates.

Background: Cross-jurisdictional sharing is gaining traction as an option for increasing the effectiveness and efficiency of public health services in local health departments.

Research Aim: Assess whether breastfeeding initiation among participants in the changed with the addition of a trained breastfeeding specialist funded by cross-jurisdictional integration.

Methods: A longitudinal retrospective comparative difference in difference design using state-based program data, pre- and post-integration was undertaken. Three local county health departments ( = 5) that fully integrated into one Community Health Board during January 2015, and four neighboring Community Health Boards ( = 4) that did not integrate, were included.

Results: Controlling for confounders and interactions, the relative rate of change over time in breastfeeding initiation rates was greater in the integrated jurisdiction than neighboring Community Health Boards, but not statistically significant. When the integrated Community Health Board's original three local health departments were considered separately, the relative rate of change over time in breastfeeding rates was greater for one local health department in comparison to three neighbor Community Health Boards ( = .037, .048, and .034, respectively).

Conclusions: The addition of a specialized breastfeeding nutritionist led to improved breastfeeding initiation rates. The increase was significant only in the largest original local health department, which also had the lowest breastfeeding initiation rate pre-merger. The greatest positive change was seen in this local health department where the specialist staff was physically located. Public health staff specialization can lead to increases in economic efficiency and in improved delivery of public health services.