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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: J Am Stat Assoc. 2010 Mar 1;105(489):312–323. doi: 10.1198/jasa.2009.tm08013

Table 2.

Estimates for mammographic mass data with standard deviations in parentheses

MLE SCAD-AIC SCAD-BIC 5-Fold CV
β 0 −11.04(1.48) −11.17(1.13) −11.16(1.07) −11.49 (1.14)
BIRADS (x1) 2.18(0.23) 2.19(0.23) 2.25(0.23) 2.23 (0.23)
age (x2) 0.05(0.01) 0.04(0.01) 0.04(0.01) 0.05 (0.01)
density (x3) −0.04(0.29) 0(-) 0(-) 0(-)
sRound (x4) −0.98(0.37) −0.99(0.37) −0.80(0.34) −0.81 (0.35)
sOval (x5) −1.21(0.32) −1.22(0.32) −1.07(0.30) −1.07 (0.30)
sLobular (x6) −0.53(0.35) −0.54(0.34) 0(-) 0(-)
mCircum (x7) −1.05(0.42) −0.98(0.32) −1.01(0.30) −1.07 (0.31)
mMicro (x8) −0.03(0.65) 0(-) 0(-) 0(-)
mObscured (x9) −0.48(0.39) −0.42(0.30) 0(-) −0.47 (0.30)
mIlldef (x10) −0.09(0.33) 0(-) 0(-) 0(-)