Table 7.
ZINB models on doctor office visits. The estimated coefficients with standard errors in parentheses, log-likelihood (logLik), log-likelihood by cross-validation (logLik-CV), BIC and AIC values.
| ZINB | BE(0.01) | ZINB-LASSO | ZINB-MCP | ZINB-SCAD | |
|---|---|---|---|---|---|
| NB component | |||||
| (Intercept) | 2.41(0.32) | 2.57(0.12) | 2.31(0.15) | 2.49(0.12) | 2.10(0.15) |
| health | −0.16(0.03) | −0.20(0.02) | −0.17(0.02) | −0.20(0.02) | −0.19(0.02) |
| handicap | 0.27(0.22) | 0.30(0.09) | 0.16(0.10) | 0.23(0.10) | 0.26(0.10) |
| hdegree | −0.002(0.005) | ||||
| married | −0.15(0.11) | ||||
| schooling | −0.005(0.01) | ||||
| hhincome | 0.004(0.02) | ||||
| children | 0.02(0.09) | ||||
| self | −0.36(0.19) | −0.37(0.13) | −0.37(0.12) | ||
| civil | −0.27(0.16) | −0.34(0.12) | −0.33(0.12) | ||
| bluec | 0.10(0.10) | ||||
| employed | −0.09(0.11) | ||||
| public | −0.01(0.14) | 0.06(0.09) | 0.31(0.09) | ||
| addon | 0.36(0.30) | ||||
| age30 | 0.09(0.35) | ||||
| age35 | −0.25(0.35) | ||||
| age40 | 0.05(0.36) | ||||
| age45 | 0.72(0.43) | ||||
| age50 | 0.20(0.41) | 0.04(0.10) | 0.22(0.07) | ||
| age55 | −0.52(0.33) | 0.10(0.11) | 0.21(0.09) | ||
| age60 | 0.40(0.33) | ||||
| health:age30 | −0.01(0.05) | ||||
| health:age35 | 0.04(0.05) | ||||
| health:age40 | −0.02(0.06) | ||||
| health:age45 | −0.10(0.07) | ||||
| health:age50 | −0.02(0.06) | ||||
| health:age55 | 0.13(0.06) | ||||
| health:age60 | −0.10(0.06) | ||||
| θ̂ | 1.38(0.12) | 1.27(0.11) | 1.37(0.13) | 1.27(0.13) | 1.25(0.13) |
| Zero component | |||||
| (Intercept) | −2.31(0.99) | −2.98(0.38) | −2.70(0.29) | −3.35(0.41) | −3.62(0.41) |
| health | 0.23(0.10) | 0.30(0.04) | 0.25(0.03) | 0.32(0.05) | 0.34(0.04) |
| handicap | −0.33(0.79) | ||||
| hdegree | −0.002(0.02) | ||||
| married | −0.40(0.27) | ||||
| schooling | 0.02(0.04) | ||||
| hhincome | −0.04(0.04) | ||||
| children | 0.51(0.25) | 0.20(0.15) | 0.43(0.18) | 0.52(0.18) | |
| self | −0.25(0.65) | ||||
| civil | 0.02(0.42) | ||||
| bluec | 0.02(0.24) | ||||
| employed | −0.08(0.32) | ||||
| public | −0.23(0.39) | ||||
| addon | 0.30(0.53) | ||||
| age30 | −1.68(1.32) | ||||
| age35 | 0.90(1.41) | ||||
| age40 | −0.65(1.33) | ||||
| age45 | 3.00(1.05) | −0.33(0.20) | |||
| age50 | −2.96(1.35) | −1.00(0.28) | −0.40(0.18) | −0.67(0.25) | |
| age55 | 0.34(1.36) | ||||
| age60 | −2.34(2.76) | ||||
| health:age30 | 0.23(0.16) | ||||
| health:age35 | −0.11(0.17) | ||||
| health:age40 | 0.12(0.17) | ||||
| health:age45 | −0.41(0.14) | ||||
| health:age50 | 0.25(0.17) | ||||
| health:age55 | 0.11(0.18) | ||||
| health:age60 | 0.20(0.35) | ||||
| Summary | |||||
| logLik | −3625.9 | −3656.3 | −3664.5 | −3648.8 | −3654.7 |
| BIC | 7679.5 | 7380 | 7411.6 | 7380.2 | 7384.3 |
| AIC | 7365.9 | 7330.5 | 7351.1 | 7319.7 | 7329.3 |
| logLik-CV | −370.6 | −368.7 | −368.5 | −368.0 | −368.7 |