"sex"	"smoking"
"M"	NA
"M"	NA
"M"	"yes"
"M"	"yes"
"M"	"yes"
"F"	"no"
"M"	NA
"F"	"yes"
"F"	"no"
"M"	NA
"F"	"no"
"M"	"no"
NA	"yes"
"F"	"no"
NA	NA
"M"	NA
"F"	"no"
"M"	"yes"
"F"	"no"
"M"	NA
"M"	"no"
NA	"yes"
"F"	"yes"
"M"	NA
"F"	"no"
"M"	"yes"
"F"	"yes"
"F"	"no"
"M"	"yes"
"M"	"yes"
"M"	"no"
"F"	NA
"M"	"yes"
"M"	"yes"
"M"	"no"
"F"	"no"
"F"	"no"
NA	"no"
"M"	"no"
"F"	"no"
"M"	"yes"
"M"	"no"
NA	"no"
"F"	"no"
"M"	"yes"
NA	NA
"M"	"yes"
"F"	"no"
"F"	"yes"
"M"	"yes"
"M"	"yes"
"M"	"yes"
"M"	NA
"M"	"no"
"M"	"yes"
"M"	NA
NA	"no"
"F"	"no"
"M"	"no"
"M"	"no"
NA	"yes"
"M"	"yes"
"M"	"no"
"F"	NA
"M"	"yes"
"F"	"no"
"F"	NA
NA	"no"
"F"	"no"
"M"	"yes"
NA	"no"
"M"	NA
"F"	"yes"
"M"	"yes"
"M"	"yes"
"M"	"yes"
NA	"no"
"F"	"no"
"M"	"no"
"F"	"no"
NA	"no"
"F"	"no"
"F"	"no"
NA	"no"
NA	"yes"
"F"	NA
"F"	"no"
"F"	"no"
"M"	"yes"
"F"	"no"
"F"	"no"
"M"	"yes"
"M"	"no"
"M"	"yes"
"F"	"yes"
"F"	"no"
"M"	"yes"
"M"	"yes"
"M"	"no"
"M"	"yes"
"F"	"no"
"F"	"no"
"M"	"yes"
NA	"no"
"M"	"no"
"M"	"yes"
"F"	"no"
"F"	"no"
"F"	"no"
"F"	"no"
"M"	"no"
"F"	"yes"
NA	"no"
NA	"no"
"M"	"yes"
NA	"no"
"M"	NA
"M"	NA
"M"	"yes"
"M"	"yes"
"F"	"yes"
"F"	"no"
"M"	"yes"
"F"	"yes"
"M"	"no"
"F"	NA
"M"	"no"
"M"	"no"
"M"	"no"
NA	"yes"
"F"	"no"
"F"	"yes"
NA	"no"
"M"	"no"
"F"	"no"
"M"	NA
"M"	NA
"F"	"no"
"M"	"no"
"M"	"yes"
"M"	NA
"M"	"no"
"F"	"yes"
"F"	"no"
"F"	"no"
"M"	"yes"
"F"	"no"
"M"	"yes"