Table 2.
Contingency matrix of the epoch-by-epoch comparison between automatic staging (AS) and visual staging consensus (VSa).
| Contingency Matrix (Number of Epochs) | Consensus of Visual stagings (VSa = VS1 and VS2) | Total | |||||
|---|---|---|---|---|---|---|---|
| Unscored or Experts Disagree | Wake | REM Sleep | N1 | N2 | N3 | ||
| Automatic staging (AS) | |||||||
| Artifact | 135 | 863 | 74 | 19 | 66 | 4 | 1,161 |
| Wake | 1,887 | 12,376 | 297 | 701 | 174 | 1 | 15,436 |
| REM sleep | 4,238 | 933 | 12,849 | 936 | 1,086 | 0 | 20,042 |
| N1 | 2,089 | 796 | 506 | 829 | 736 | 2 | 4,958 |
| N2 | 8,123 | 901 | 726 | 657 | 31,904 | 986 | 43,297 |
| N3 | 4,057 | 44 | 12 | 2 | 1,747 | 9,063 | 14,925 |
| Total | 20,529 | 15,913 | 14,464 | 3,144 | 35,713 | 10,056 | 99,819 |
Boldfaced values indicate agreement between AS and VS consensus.