Table 4: Fixed Effects Parameter Estimates in the Restricted Model

Parameter Estimate Std. Error df t p-Value 95% Confidence Interval
Lower Bound Upper Bound
Intercept 2.942 0.074 40.592 39.997 <0.001 2.794 3.091
b: log(age) – mean[log(age)] 1.560 0.370 38.962 4.213 <0.001 0.811 2.310
c: Condition resting -0.572 0.082 38.532 -6.962 <0.001 -0.738 -0.406
stimulated 0a 0 . . . . .
fa: {Log(flow rate) – mean[Log(flow rate)}× {log(age) – mean[log(age)]} -2.253 0.627 55.228 -3.592 0.001 -3.510 -0.996

a This parameter is set to zero because it is redundant.
Functional form of the proposed model sAA activity= e 2.942+1.56×b-0.572×c-2.253×fa