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. 2021 Jun 15;25:100416. doi: 10.1016/j.invent.2021.100416

Table 4.

Within-group effects for clinical outcome measures.

Outcome measure n Pre
M (SD)
Post
M (SD)
Change (%) Statical tests Significance
p
Effect size
Cohens d
[95% CI for difference]
ASRS full scale
 All participantsa 9 45.7 (8.2) 38.3 (7.7) −16.2% t(8) = 2.429 0.041* 0.93 [+0.4; +14.3]
 Completersb 6 47.5 (7.6) 38.8 (9.1) −18.0% t(5) = 2.925 0.033* 1.04 [+1.1; +16.2]
ASRS Inattention
 All participants 9 26.7 (3.5) 21.2 (3.5) −23.0% t(8) = 3.696 0.006* 1.57 [+2.1; +8.8]
 Completers 6 27.7 (3.1) 21.7 (4.2) −24.3% t(5) = 3.286 0.022* 1.63 [+1.3; +10.7]
ASRS Hyperactivity
 All participants 9 19.0 (6.3) 17.1 (5.0) −10.5% t(8) = 1.046 0.326 0.33 [−2.3; +6.1]
 Completers 6 19.8 (5.4) 17.2 (5.6) −14.1% t(5) = 2.039 0.097 0.47 [−0.7; +6.0]
PSS
 All participants 10 31.3 (5.6) 28.8 (8.6) −8.0% t(9) = 1.100 0.300 0.35 [−2.6; +7.6]
 Completers 7 30.6 (5.4) 25.9 (8.4) −15.0% t(6) = 2.569 0.042* 0.67 [+0.2; +9.2]
PHQ-9
 All participants 10 10.3 (2.6) 9.3 (3.5) −9.7% t(9) = 0.791 0.450 0.32 [−1.9; +3.9]
 Completers 7 9.7 (2.6) 8.4 (3.9) −13.0% t(6) = 0.727 0.495 0.39 [−3.0; +5.6]
GAD-7
 All participants 10 7.2 (2.6) 7.1 (2.7) −1.4% t(9) = 0.091 0.930 0.04 [−2.4; +2.6]
 Completers 7 7.3 (2.4) 7.0 (3.1) −4.0% t(6) = 0.269 0.797 0.11 [−2.3; +2.9]
AAQoL
 All participants 10 48.0 (9.6) 55.8 (15.0) +16.3% t(9) = −1.822 0.102 0.62 [−17.4; +1.9]
 Completers 7 48.4 (11.5) 60.8 (13.5) +26.0% t(6) = −3.307 0.016* 0.99 [−21.6; −3.2]
AAQoL Relationships
 All participants 10 56.0 (21.1) 64.0 (18.7) +14.3% t(9) = −1.432 0.186 0.40 [−20.6; +4.6]
 Completers 7 53.6 (24.3) 68.6(16.0) +28.0% t(6) = −2.598 0.041* 0.73 [−29.1; −0.9]
AAQoL Psychological health
 All participants 10 48.3 (15.9) 56.3 (15.7) +16.6% t(9) = −1.039 0.326 0.51 [−25.2; +9.3]
 Completers 7 41.7 (12.3) 60.1 (14.6) +44.1% t(6) = −4.155 0.006* 1.36 [−29.3; −7.6]
AAQoL Life outlook
 All participants 10 45.0 (10.1) 51.4 (20.2) +14.2% t(9) = −1.561 0.153 0.40 [−15.7; +2.9]
 Completers 7 49.0 (9.4) 59.2 (18.8) +20.8% t(6) = −2.059 0.085 0.69 [−22.3; +1.9]
AAQoL Life productivity
 All participants 10 46.1 (14.2) 54.6 (16.9) +18.4% t(9) = −2.054 0.070 0.55 [−17.7; +0.9]
 Completers 7 49.4 (15.5) 58.8 (17.7) +19.0% t(6) = −2.054 0.086 0.57 [−20.6; +1.8]

Note. M = mean; SD = standard deviation. ASRS = Adult ADHD Self-Report Scale; PSS = Perceived Stress Scale; PHQ = Patient Health Questionnaire; GAD = General Anxiety Disorder; AAQOL = Adult ADHD Quality of Life.

a

All participants: All participants who completed the post-intervention measurements.

b

Completers: Participants who completed all three modules in the intervention.