Characterization and risk factors for unexplained female infertility in Sudan: A case-control study

Figure 1 Food groups consumed by the study participants (n = 400). Values are given as the mean.

Figure 2 Variables eligible for the multivariable logistic regression model are described. A: The polynomial association between infertility in Sudanese women, and marital status; B: Family history of infertility; C: Use of modern contraceptives; D: Smoking; E: Caffeine consumption; F: Physical activity level; G: Number of meals consumed per day; H: Other vitamin A-rich fruits and vegetables; I: Other vegetables.