Table 3.

Subgroup analysis of Mg and mortality in hemodialysis patients

	Overall mortality			Cardiovascular mortality
	HR	95% CI	p value	HR	95% CI	p value
All patients
Mg (per 1 mmol/L)	0.017	0.002–0.197	0.001	0.011	0.000–0.269	0.006
Mg group (low to high)	3.535	1.594–7.838	0.002	4.285	1.422–12.910	0.010
Age ≥60, 12-month follow-up
Mg (per 1 mmol/L)	0.020	0.001–0.415	0.012	0.010	0.000–0.491	0.021
Mg group (low to high)	4.358	1.474–12.882	0.008	5.525	1.224–24.934	0.026
Age ≥60, 6-month follow-up
Mg (per 1 mmol/L)	0.033	0.000–2.624	0.127	0.016	0.000–2.490	0.109
Mg group (low to high)	2.019	0.939–4.344	0.072	6.730	0.828–54.705	0.075

Mg, magnesium; HR, hazard ratio.