Table 2

 A comparison of CO2 (kPa) measured in three different ways

nMean (SD)95% CIp Value
P(a-Tc)co221−0.13 (0.71)−0.46 to 0.190.4
P(a-Et)co2211.04 (0.98)0.59 to 1.49<0.001
P(Tc-Et)co282−0.07 (0.84)−0.26 to 0.110.43