. 2020 Jun 23;31:105904. doi: 10.1016/j.dib.2020.105904

Box 1.

Procedure for obtaining prolactin concentrations from figures.

1. The PDF of the figure in the article was copied from Adobe PDF zooming by 600%. To determine the prolactin concentration of a particular value (y_n), three positions (in mm) were determined using rules in Microsoft Publisher (zoom view set at 600%):

y_max: the maximum concentration of the prolactin scale. We annotated the y position of the Publisher y axis rule (in mm).

y₀: the minimal concentration of the prolactin scale (usually zero). We annotated the y position of the Publisher y axis rule (in mm).

y_n: the concentration of the prolactin value to be extracted (unknown). We annotated the y position of the Publisher y axis rule (in mm).

2. Calculation of d1 and d2.

d1= y₀-y_max (in mm).

d2= y₀-y_n (in mm).

3. We aimed to calculate a ratio that would reflect the increase in prolactin concentrations for each mm of y axis rule increase.

Ratio PRL/d1= Range of prolactin concentrations (from y₀ to y_max)/d1

4. Calculation of prolactin concentration with the following formula:

PRL (y_n)= d2 x Ratio PRL/d1