Table 2 Interobserver agreement and EEG technologists’ reading performances regarding the primary EEG features.
From: Prospective evaluation of interrater agreement between EEG technologists and neurophysiologists
Reported findings, N (%) | Interrater agreement (Gwet AC1) | EEGs technologists’ readings performances | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
EEG technologists | Neurophysiologists | PA (95%CI) | AC1 (95%CI) | Strength of IRA | FP, N (%) | FN, N (%) | Se, % (95% CI) | Sp, % (95% CI) | PPV, % (95% CI) | NPV, % (95% CI) | |
IEDs (yes) | 537 (35.3) | 344 (22.5) | 78.0 (76–80) | 0.63 (0.59–0.67) | Substantial | 265 (49.3) | 72 (7.3) | 79 (74–83) | 78 (75–83) | 51 (46–55) | 93 (93–94) |
SE (yes) | 54 (3.5) | 44 (2.9) | 97.0 (96–98) | 0.97 (0.96–0.98) | Almost perfect | 28 (51.9) | 18 (1.2) | 59 (43–74) | 98 (97–99) | 48 (34–62) | 99 (98–99) |
Seizures (yes) | 37 (2.4) | 33 (2.2) | 97.1 (96–98) | 0.97 (0.96–0.98) | Almost perfect | 24 (64.7) | 20 (1.3) | 39 (23–58) | 98 (98–99) | 35 (20–53) | 99 (98–99) |
Slowing (yes) | 930a (60.9) | 932b (61.4) | 77.1 (76–80) | 0.58 (0.53–0.62) | Moderate | 164 (17.6) | 173 (29.0) | 81 (79–84) | 72 (68–76) | 82 (80–85) | 71 (67–75) |
Sleep figures (yes) | 245c (16.3) | 135d (8.9) | 84.1 (82–86) | 0.79 (0.77–0.82) | Substantial | 175 (71.4) | 63 (5.0) | 52 (43–61) | 87 (85–89) | 28 (23–34) | 95 (94–96) |
Alpha PDR (yes) | 1014a (66.5) | 1035e (67.8) | 88.5 (87–90) | 0.79 (0.76–0.82) | Substantial | 98 (9.7) | 78 (15.2) | 91 (89–92) | 84 (81–87) | 92 (90–94) | 81 (77–84) |
Conclusions (normal) | 485 (31.7) | 467 (30.6) | 83.6 (82–86) | 0.71 (0.68–0.75) | Substantial | 134 (27.7) | 116 (11.1) | 75 (71–79) | 87 (85–89) | 72 (68–76) | 89 (87–91) |
Conclusion (pathological) | 1043 (68.3) | 1061 (69.4) | 116 (11.1) | 134 (27.7) | 87 (85–89) | 75 (71–79) | 89 (87–91) | 72 (68–76) | |||
