Table 4

Correlation analysis

	Patients requiring 0u pRBC (n=237)	Patients requiring 1u–4u pRBC (n=143)	Patients requiring ≥5u pRBC (n=82)
Crystalloid volume vs. pRBC	–	0.029	0.033
Crystalloid volume vs. RI	0.964*	0.460*	0.129
Crystalloid volume vs. number of crystalloids	0.510*	0.447*	0.659*
% Normal saline vs. resuscitation parameters
pH	−0.072	−0.14	0.055
Sodium	0.153*	0.085	0.068
Chloride	0.236*	0.097	0.068
Lactate	−0.112	−0.034	−0.005
GFR	0.068	−0.101	−0.012
% Lactated Ringer’s solution vs. resuscitation parameters
pH	0.020	0.015	0.041
Sodium	−0.131	−0.185*	−0.118
Chloride	−0.213*	−0.086	−0.150
Lactate	−0.062	−0.011	−0.010
GFR	−0.017	0.112	0.081
% Normosol vs. resuscitation parameters
pH	0.080	0.083	0.040
Sodium	−0.026	0.157	−0.070
Chloride	−0.018	−0.048	0.051
Lactate	0.079	0.069	−0.060
GFR	−0.044	0.004	−0.053

Analysis with Pearson’s correlation coefficient.
r Value ≤0.35=weak correlation, 0.36–0.67=moderate correlation, ≥0.68=strong correlation.
*P<0.05.
GFR, Glomerular Filtration Rate; RI, Resuscitation Intensity; pRBC, Packed Red Blood Cells; u, unit.