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Symbol Key
| Symbol: | Definition: |
|---|---|
| N | Sample size |
| W | Years from AIDS to study enrollment |
| T | Years from AIDS to death |
| C | Years from AIDS to right censoring |
| T* | Minimum of T and C |
| D | Indicator of death before right censoring |
| Rk | Time of kth ranked event |
| Yk | Number of deaths at time Rk |
| Nk | Number at risk at time Rk |
| Δk | Time interval between ranked death times |
| S(t) | Probability of survival to time t |
| h(t), hk | Hazard at time t, or Rk |
| H(t) | Cumulative hazard to time t |
