Research Article

Effect of the PIVO Device on the Procedure of Phlebotomy from Peripheral IV Catheters

Table 4

Differences of least squares means, sodium/creatinine.

TubeEstimateStandard ErrorDifference from ControlStandard ErrorDF Value

Sodium
A1139.530.3494−0.12470.244928−0.510.6147
B1139.550.3895−0.10240.316928−0.320.7490
C1139.450.4510−0.20590.309228−0.670.5110
D1139.510.3631−0.13950.276228−0.510.6175
Control139.650.4461- - - -- - -- - -- - -- - -

Creatinine
A10.81330.028640.0032800.01204280.270.7873
B10.78970.03451−0.020390.0162328−1.260.2194
C10.78280.03180−0.027740.0150728−1.840.0763
D10.79880.02915−0.011270.0147628−0.760.4514
Control0.81000.02755- - - -- - -- - -- - -- - -