Table 2.

Multivariate regression applied to published micropuncture data from Brenner (13) and Blantz (14)a

Original model tested: ΔP = πA + LpA + SNPF + Protocol + Lab
Dependent VariableIndependent Terms in Multivariate Regression
πA (mmHg)LpA (nl/s per mmHg)SNPF (nl/min)
a“Protocol” is a categorical variable that refers to the experimental design for manipulating plasma protein concentration. “Lab” is a categorical variable that refers to the laboratory where experiments were performed (Brenner versus Blantz). The regression coefficients for πA, LpA, and SNPF did not change significantly when these categorical variables were removed from the analysis. The results shown here were obtained after removing these categorical variables. Abbreviations as in Table 1.
ΔP (mmHg)
Regression coefficient0.84 ± 0.09-72 ± 10∼0
P value associated with regression coefficient2 × 10-101 × 10-100.750
Original model tested: EFPA = πA + LpA + SNPF + Protocol + Lab
Dependent VariableIndependent Terms in Multivariate Regression
πA (mmHg)LpA (nl/s per mmHg)SNPF (nl/min)
EFPA (mmHg)
Regression coefficient-0.16 ± 0.09-72 ± 10∼0
P value associated with regression coefficient0.102 × 10-110.750