Low Vitamin D Status and Suicide: A Case-Control Study of Active Duty Military Service Members
Figure 1
Plot of the computed odds ratios (OR) for the 8 octiles of 25(OH)D concentration, locating each at the mid-point of the respective octiles.
The vertical lines at each point represent the 95% confidence intervals for each odds ratio, (see Table 2, footnote 1). The dashed line is the least squares fit of the 8 values to the equation: OR = 0.48 + 10,220 exp (−0.9893X), which is the expression best suited to describe nutrient effect as a function of intake. As is visually apparent, the regression line falls within the confidence limits for 6 of the 7 octiles above the first. (Copyright, Robert P. Heaney, 2012. Used with permission.).