Table 6

Sensitivity analysis comparing the overall predictive accuracy (measured as C-index and Calibration Chi-square statistics) for LCAs with different model specifications
Model Model Features C index Calibration Chi-square
OHTS EGPS OHTS EGPS
0 Cox mode with baseline factors only 0.778 0.706 5.0 2.1
1 LCA with a quadratic within-class functional form 0.821 0.719 11.3 7.0
2 LCA with a linear within-class functional form 0.825 0.720 10.2 4.9
3 LCA with a constant within-class functional form 0.823 0.727 10.5 13.5

Gao et al.

Gao et al. BMC Medical Research Methodology 2012 12:151   doi:10.1186/1471-2288-12-151

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