Figure 1
From: The “hidden” epidemic: a snapshot of Moroccan intravenous drug users
Title: positive correlation between age and average seropositivity. Legend: Subjects were binned into 7 age groups (21-25; 26-30; 31-35; 36-40; 41-45; 46-50; 51-55) and average seropositivity was calculated per age group. Pearson’s Product Moment reveals a moderately positive correlation between age and seropositivity (r = 0.726 95% CI [0.633, 0.798]). Seropositivity (proportion) is specified on the Y-axis, while age groups are specified on the X-axis. Individual data points are shown in circles, while average seropositivity per age group is shown by the red line. Best-fit line upon which the correlation is based is indicated in green.