Correction to: the performance of fertility awareness-based method apps marketed to avoid pregnancy (J Am Board Fam Med (2016) 29 (508-11))

In the above-mentioned article,1 the electronic version differs from the print version due to typos in table 2. the only data affected were the apps that did not predict the fertile window. the electronic version on the j am board fam med website has been corrected. we apologize for the error,and we regret any confusion or inconvenience it may have caused.