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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Biometrics. 2009 Dec;65(4):1133–1144. doi: 10.1111/j.1541-0420.2009.01201.x

Table 3.

Average length for the bootstrap confidence intervals of the predictiveness curve estimators.

Method R(v1) R−1(0.1) R(v2) R−1(0.3)
Model 1: μ = 0.5, v1 = R−1(0.1) = 0.074, v2 = R−1(0.3) = 0.886
nD = nD̄ = 250 PROC1 0.051 0.26 0.058 0.18
PROC2 0.065 0.42 0.060 0.26
nD = nD̄ = 500 PROC1 0.038 0.19 0.045 0.13
PROC2 0.047 0.27 0.046 0.18
Model 2: μ = 0.8, v1 = R−1(0.1) = 0.232, v2 = R−1(0.3) = 0.808
nD = nD̄ = 250 PROC1 0.047 0.21 0.065 0.11
PROC2 0.057 0.29 0.070 0.17
nD = nD̄ = 500 PROC1 0.035 0.15 0.051 0.081
PROC2 0.041 0.19 0.053 0.11
Model 3: μ = 1.2, v1 = R−1(0.1) = 0.396, v2 = R−1(0.3) = 0.770
nD = nD̄ = 250 PROC1 0.04 0.20 0.082 0.073
PROC2 0.045 0.26 0.097 0.14
nD = nD̄ = 500 PROC1 0.029 0.14 0.064 0.058
PROC2 0.032 0.16 0.074 0.086
1

partial binormal ROC modeling with t ∈ (0.01, 0.99)

2

partial binormal ROC modeling with t ∈ (0.50, 0.99) for estimating R−1(0.1) and R(v1) for v1 = R−1(0.1), and t ∈ (0.01, 0.50) for estimating R−1(0.3) and R(v2) for v2 = R−1(0.3)