Risk factors for sub–therapeutic serum concentrations of magnesium sulfate in severe preeclampsia of Chinese patients

Table 2 The results of univariate analysis for risk factors associated with sub-therapeutic blood magnesium concentration

Variables	OR	95%CI	P-value
Age	1.066	0.983–1.156	0.121
Height	1.059	0.973–1.152	0.184
Weight	1.047	1.006–1.090	0.024^*
BMI	1.117	0.998–1.249	0.054^*
Gestational age	1.035	0.931–1.150	0.524
Ccr	1.017	1.007–1.028	0.001^*
ALT	0.989	0.973–1.005	0.176
AST	0.994	0.977–1.010	0.449
Albumin	1.099	0.995–1.214	0.062^*
Maintenance dose	1.237	0.452–3.385	0.678
Measurement time	0.850	0.742–0.975	0.020^*
Whether the loading dose was given	0.471	0.197–1.123	0.089^*
Baseline serum magnesium concentrations	0.025	0.000–3.388	0.141

OR The odds ratio, CI Confidence intervals, BMI Body mass index, Ccr Creatinine clearance, ALT Alanine aminotransferase, AST Aspartate aminotransferase
^*Variables with P value < 0.1

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