Figure 2.
(a) Adjusted β (regression coefficient) of depressive symptoms versus serum magnesium (Mg). The reference group was serum Mg < 0.75 mmol/L. From top to bottom, β value for the three comparisons were [−0.077 (95% CI −0.210–0.056)], [−0.128 (95% CI −0.254–−0.002)], and [−0.180 (95% CI −0.319–−0.041)]. (b) Adjusted odds ratios of depressive symptoms versus serum magnesium (Mg). The reference group was serum Mg < 0.75 mmol/L. From top to bottom, the odds ratio for the three comparisons were [0.770 (95% CI 0.402–1.477)], [0.585 (95% CI 0.314–1.090)], and [0.459 (95% CI 0.218–0.966)].