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. 2012 Jul 23;14(1):28–41. doi: 10.1093/biostatistics/kxs025

Table 4.

Analysis results for the effect (risk difference) of hs-CRP from the ARIC study. The model is adjusted for age, sex, race, smoking status, systolic blood pressure, LDL-C, HDL-C, and diabetes

Time-invariant weight
Time-varying weight
Variable Estimate (×105) SE (×105) p-value Estimate (×105) SE (×105) p-value
For the CHD event
 CRP2 0.991 0.360 0.006 0.974 0.373 0.009
 CRP3 1.770 0.464 <0.001 1.693 0.460 <0.001
 CRP2*(LDL-C <130) −1.021 0.427 0.017 −1.038 0.443 0.019
 CRP3*(LDL-C <130) −1.204 0.511 0.019 −1.147 0.504 0.023
For the stroke event
 CRP2 −0.327 0.150 0.029 −0.274 0.153 0.073
 CRP3 −0.409 0.159 0.010 −0.331 0.159 0.040
 CRP2*(LDL-C <130) 0.243 0.249 0.329 0.216 0.259 0.405
 CRP3*(LDL-C <130) 0.170 0.252 0.501 0.141 0.254 0.578
 CRP2*(t>1069) 0.255 0.121 0.035 0.247 0.118 0.035
 CRP3*(t>1069) 0.603 0.120 <0.001 0.576 0.110 <0.001