Rogelio Perez-Padilla1,2,a, Cecilia Maria Patino1,3,b, Juliana Carvalho Ferreira1,4,c
Perez-Padilla1 R, 2 , a , Patino1 CM, 3 , b , et al. Number needed to treat: a useful statistic to evaluate the impact of an intervention. J Bras Pneumol. 2019;45(6):e20190371