The rate of babies born less than 37 weeks of gestation increased in Wisconsin between 2014 and 2015, according to a report card from the March of Dimes released Tuesday.
The preterm birth rate in the state was 9.4 percent in 2015, an increase of 0.2 percent from last year. That led the organization to give Wisconsin a "C," a downgrade from the "B" the state received last year.
The state ranked 34th in the nation when it came to the rate of preterm births in 2015. Nationwide, the preterm birth rate increased for the first time in eight years, from 9.57 percent in 2014 to 9.63 percent in 2015.
Six other states received worse grades than last year: Arkansas, Connecticut, Idaho, Nebraska, New Mexico and Utah. Twenty other states and the District of Columbia also received a C.