%0 Comparative Study %T The Cost-Effectiveness of Bike Share Expansion to Low-Income Communities in New York City. %A Yu W %A Chen C %A Jiao B %A Zafari Z %A Muennig P %J J Urban Health %V 95 %N 6 %D 12 2018 %M 30397819 %F 5.801 %R 10.1007/s11524-018-0323-x %X The "Citi Bike" bike share program in New York City is the largest bike share program in the USA. We ask whether expanding this program to lower-income communities is cost-effective means of encouraging exercise and reducing pollution in New York City. We built a stochastic Markov model to evaluate the cost-effectiveness of the Citi Bike expansion program, an effort to extend bike share to areas with higher costs and risks over a 10-year time horizon. We used one-way sensitivity analyses and Monte Carlo simulation to test the model uncertainty. The incremental cost-effectiveness ratio of the Citi Bike expansion program relative to the current program (status quo) was $7869/quality-adjusted life year gained. The Citi Bike expansion program in New York City offers good value relative to most health interventions.