HFO time occupancy gave 0.31 percentage points lower mean list agreement than counts with equal weights for seven SEEG patients

We compared HFO counts with marked time in 135 five-minute SEEG sleep records from seven patients. HFO means high-frequency oscillation. SEEG means stereoelectroencephalography. We used fixed bipolar pair sets and fractional membership for tied scores. Patients had equal weight. Mean between-record list agreement was 70.28 percent for time occupancy and 70.59 percent for count. The mean difference was -0.31 percentage points. The descriptive 95 percent patient bootstrap interval was -3.34 to +3.16 points. The exact two-sided patient sign-flip test gave p = 0.859375. Two patient differences were positive and five were negative. This sample does not establish a repeatability gain or equal repeatability. A separate within-record duration exchange model gave an upper-tail value of 0.1307 from 9,999 draws. This result assumes exchangeable durations among marks within each record. Duration changed list membership in 71 records, but it did not produce a clear mean repeatability gain. Independent decimal, interval, tie, score, and exact inference checks passed. A full repeat reproduced all 15 numerical output files byte for byte. Fresh retrieval matched all 185 public source event tables. The package contains source annotations, provenance, code, results, figures, and offline repeat instructions. This is a new analysis of an existing cohort. It does not establish clinical benefit.

high-frequency oscillations · stereoelectroencephalography · time occupancy · event duration · channel list repeatability · interictal sleep · duration exchange