Group | Sample size | Number of true positives | Expected number of positive outcomes identified by the algorithma |
---|---|---|---|
Control | NCON | XCON | ECON = XCONSe + (NCON − XCON)(1 − Sp) |
Test | NTES | XTES | ETES = XTESSe + (NTES − XTES)(1 − Sp) |
Group | True risk | Expected risk based on the algorithm | |
---|---|---|---|
Control | RCON = XCON/NCON | ECON/NCON = RCONSe + (1 − RCON)(1 − Sp) | |
Test | RTES = XTES/NTES | ETES/NTES = RTESSe + (1 − RTES)(1 − Sp) |
Relative measure | True relative measure | Expected relative measure | |
---|---|---|---|
Risk ratio (RR) | RRTRUE = RTES/RCON | RREXP = (ETES/NTES)/(ECON/NCON) |