Fig. 3From: A nationwide registry study on heart failure in Norway from 2008 to 2018: variations in lookback period affect incidence estimatesIncidence rates utilizing different approaches to lookback period. Incidence rates are age- and sex standardised per 1000 PY. Grey line; 4 years fixed LP, Black line; 6 years fixed LP, Green line, 8 years LP; Blue line; including all available data from 2014. PY person years, LP lookback period, AAD all available dataBack to article page