Derived SEER summary stage 1977:Prid:Pt:Cancer.XXX:Nom
derived seer summary stage 1977:prid:pt:cancer.xxx:nom
Derived SEER summary stage 1977:Presence or Identity:To identify measures at a point in time:Cancer.Not specified:Nominal
derived seer summary stage 1977:presence or identity:to identify measures at a point in time:cancer.not specified:nominal