Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Clinical Epidemiology, Vol Volume 11, Pp 197-205 (2019) Hawley, S, Sanni Ali, M, Berencsi, K, Judge, A & Prieto-Alhambra, D 2019, ' Sample size and power considerations for ordinary least squares interrupted time-series analysis : a simulation study ', Journal of Clinical Epidemiology, vol. 11, pp. 197-205 . https://doi.org/10.2147/CLEP.S176723 Clinical Epidemiology