Every $1,300 New York City invested in building bike lanes in 2015 provided benefits equivalent to one additional year of life at full health over the lifetime of all city residents, according to a new economic assessment.

That's a better return on investment than some direct health treatments, like dialysis, which costs $129,000 for one quality-adjusted life year, or QALY, said coauthor Dr. Babak Mohit of the Mailman School of Public Health at Columbia University in New York.

Our greatest public health intervention, vaccines, take about $100 investment to yield one QALY, Mohit told Reuters Health by phone.

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