Table 4.

Interactions between UFR and IDH on LVMI variation.

		OR	p value
Crude model 1	IDH	0.10 (0.01 ∼ 1.32)	.080
	UFR, ml/h/kg	0.95 (0.84 ∼ 1.07)	.364
	IDH × UFR, ml/h/kg	1.33 (1.07 ∼ 1.65)	.010
Adjusted model 2	IDH	0.07 (0.00 ∼ 1.28)	.072
	UFR, ml/h/kg	0.99 (0.85 ∼ 1.15)	.875
	IDH × UFR, ml/h/kg	1.37 (1.07 ∼ 1.77)	.014

IDH: intradialytic hypotension; UFR: ultrafiltration rate; LVMI: left ventricular mass index model 2: adjusted for age, gender, body mass index, cardiovascular comorbidity (coronary heart disease and arrhythmia), ejection fraction.