##  [1] "date"       "cvd"        "sumcvd"     "excess"     "sumexcess" 
##  [6] "excum"      "exinf"      "experi"     "cvdinf"     "cvdperi"   
## [11] "excessN"    "exint"      "cvdN"       "cvdint"     "exinfdaid" 
## [16] "cvdinfdaid" "percv"      "vac"        "y"          "perv"      
## [21] "pervac"     "eximm"      "cvdimm"     "exI"        "exR"       
## [26] "exS"        "exr"        "exfr"       "cvdI"       "cvdR"      
## [31] "cdvR"       "cvdS"       "cvdr"       "cvdfr"