Table 1

Baseline (T1) characteristics by trial arm status

MT N=235Psy-Ed N=225
N%/mean (SD)N%/mean (SD)
Location
 London16871.5%16070.8%
 Cambridge6728.5%6528.8%
Female15566.0%15167.1%
Age23513.8 (1.3)22513.9 (1.4)
IQ221110.6 (19.0)218109.5 (16.0)
CES-D23216.3 (9.9)22116.6 (10.3)
SDQ-Total21912.4 (5.7)20813.1 (5.6)
WEMWBS23247.1 (10.1)22247.2 (9.3)
CAMM-Total23325.2 (8.0)22124.1 (7.9)
BRIEF-Total212133.3 (24.6)194136.4 (24.4)
DERS-Total22485.4 (23.2)21788.3 (26.1)
aSART-C1930.5 (3.7)1910.2 (4.0)
aSART-RTV1930.01 (0.1)1920.01 (0.1)
aSTROOP20363.4 (93.2)19561.8 (102.4)
aWMC2190.02 (0.2)2050.03 (0.2)
  • aSART-C was computed as the number of errors in the negative condition minus the number in the neutral condition. aSART-C was reliably different to zero (directional 1-sample t-test) at baseline, t=1.79, p=.039. aSART-RTV was computed as RTV in negative condition minus the RTV in the neutral condition. aSART-RTV was reliably different to zero at baseline, t=2.89, p=.004. aStroop was computed as mean reaction time in the incongruent trials minus mean reaction time in the congruent trials. aStroop was reliably different to zero at baseline, t=12.78, p<.0001. aWMC was computed as the proportion of correctly remembered words in the neutral condition minus the proportion remembered in the negative condition. aWMC was reliably different to zero at baseline, t=3.06, p=.002.

  • aSART-C, Affective Sustained Attention to Response Task Commission error; aSART-RTV, Affective Sustained Attention to Response Task Reaction Time Variance; aStroop, Affective Stroop performance; aWMC, Affective Working Memory Capacity; BRIEF-Total, Behaviour Rating Inventory of Executive Function Version 2 Global Composite Score; CAMM-Total, Child and Adolescent Mindfulness Measure Total Score; CES-D, Center for Epidemiological Studies Depression Scale; DERS-Total, Difficulties with Emotion Regulation Scale Total Score; IQ, score on the Cattell Culture Fair Test29 ; MT, Mindfulness Training; Psy-Ed, psychoeducation training; SDQ-Total, Strengths and Difficulties Questionnaire Total Score; WEMWBS, Warwick-Edinburgh Mental Well-Being Scale.