Figure 2
From: Women’s quality of sleep and in vitro fertilization success
Pittsburgh Sleep Quality Index (PSQI—upper left panel), Fertility Problem Inventory (FPI—upper right panel), Hospital Depression (lower left panel) and Anxiety (lower right panel) Scales (HADS) in women who did (white boxes) and did not achieve pregnancy (grey boxes). Data is reported using box plot representation because they were not normally distributed. A statistically significant difference emerged for the PSQI, as highlighted by the asterisk (p = 0.004).
