Table 2.
Demographics of JME and control participants included in the EEG study
| JME | Control | JME total versus control total | JME untreated versus treated | LEAP versus Chowdhury | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | Untreated | Treated | Total | LEAP | Chowdhury | Test statistic | P-value | Test statistic | P-value | Test statistic | P-value | |
| N EEGs | 194 | 72 | 99 | 95 | 57 | 38 | — | — | — | — | — | — |
| N individuals | 147 | 60 | 72 | 95 | 57 | 38 | — | — | — | — | — | — |
| N female (%) | 83 (60%) | 36 (61%) | 42 (62%) | 40 (42%) | 20 (35%) | 20 (53%) | χ2(1) = 7.3 | 0.007 | χ2(1) = 0.007 | 0.93 | χ2(1) = 2.9 | 0.09 |
| Mean age at EEG ± SDa | 20.5 ± 7.7 | 16.8 ± 5.2 | 23.7 ± 8.3 | 23.4 ± 9.5 | 18.8 ± 6.6 | 30.3 ± 8.9 | U = 5156 | 0.003 | U = 953 | 8.0 × 10−8 | U = 297 | 2.2 × 10−9 |
| Mean epoch length ± SD (s)a | 16.2 ± 4.3 | 15.9 ± 4.4 | 16.5 ± 4.2 | 19.2 ± 1.9 | 18.8 ± 2.3 | 20.0 ± 0.0 | U = 4355 | 1.7 × 10−8 | U = 1965 | 0.34 | U = 722 | 0.00009 |
| Median EEG time ± interquartile rangea | 10:44 ± 3:08 | 10:54 ± 3:12 | 10:35 ± 2:23 | 14:52 ± 4:14 | 14:52 ± 4:14 | — | U = 661 | 2.6 × 10−13 | U = 1661 | 0.27 | — | — |
a
Duplicate EEGs (multiple for one participant) were excluded from descriptive statistics. The most recent EEG was chosen if both were in the same treatment condition, if in different treatment conditions, untreated EEGs were used. P-values for continuous dependent variables are from Mann–Whitney U tests and for categorical variables from χ2 tests (bold text indicates P < 0.05). Test statistics and P-values for JME total versus control total, JME subgroups untreated versus treated and control subgroups LEAP versus Chowdhury are presented on the right of the table. JME = juvenile myoclonic epilepsy.