response: (chd2=='1') 
covariates: dsmoker 
SNP: 19Q12_MG_446 
Call:
coxph(formula = y[notmissing] ~ allele[notmissing] + wz[notmissing, 
    selectedcovariates] + wrua2[notmissing] + strata(wsex[notmissing]) + 
    cluster(wdata$id[notmissing]), weights = weight[notmissing], 
    robust = TRUE)

  n= 2374 
                                     coef exp(coef) se(coef) robust se     z
allele[notmissing]                  0.199     1.220    0.104     0.117  1.70
wz[notmissing, selectedcovariates]  0.633     1.883    0.121     0.138  4.59
wrua2[notmissing]FRA               -1.349     0.260    0.381     0.400 -3.38
wrua2[notmissing]SWE               -0.405     0.667    0.256     0.272 -1.49
wrua2[notmissing]UNK               -0.386     0.680    0.327     0.345 -1.12
                                         p
allele[notmissing]                 8.8e-02
wz[notmissing, selectedcovariates] 4.5e-06
wrua2[notmissing]FRA               7.4e-04
wrua2[notmissing]SWE               1.4e-01
wrua2[notmissing]UNK               2.6e-01

                                   exp(coef) exp(-coef) lower .95 upper .95
allele[notmissing]                     1.220      0.820     0.971     1.533
wz[notmissing, selectedcovariates]     1.883      0.531     1.437     2.468
wrua2[notmissing]FRA                   0.260      3.853     0.119     0.568
wrua2[notmissing]SWE                   0.667      1.499     0.392     1.136
wrua2[notmissing]UNK                   0.680      1.471     0.346     1.337

Rsquare= 0.025   (max possible= 0.882 )
Likelihood ratio test= 60.9  on 5 df,   p=8.03e-12
Wald test            = 45.4  on 5 df,   p=1.18e-08
Score (logrank) test = 57  on 5 df,   p=5.1e-11,   Robust = 47.8  p=3.93e-09

  (Note: the likelihood ratio and score tests assume independence of
     observations within a cluster, the Wald and robust score tests do not).

Updated on 2008-06-04