An official website of the United States government
X = Interval number
Lx = Number of cases alive at the beginning of the interval
Dx = Number of cases who died during the interval
Ux = Number of cases untraced (lost to follow up) during the interval
Wx = Number of cases withdrawn alive during the interval
L*x = Adjusted number of cases alive during the interval
Px = Observed survival for the interval
CPx = Cumulative observed survival
P*x = Expected survival for the interval
CP*x = Cumulative expected survival
Rx = Relative survival for the interval
CRx = Cumulative relative survival
SPx = Standard error for the observed interval survival
SCPx = Standard error for the observed cumulative survival
SRx = Standard error for the relative interval survival
SCRx = Standard error for the relative cumulative survival
