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. 2022 Jul 8;4(4):fcac180. doi: 10.1093/braincomms/fcac180

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.