Table 2.
MRI simulator training outcomes. Group comparisons via Mann-Whitney U and Chi-square tests for continuous and categorical variables, respectively. All comparisons were corrected for multiple comparisons via false discovery rate - Benjamini-Hochberg (FDR-BH).
| Variable | Pass simulator training (n = 221) | Fail simulator training (n = 29) | df | U | FDR corrected p |
||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||||
| Age (years) | 8.9 | 1.7 | 7.9 | 1.5 | 248 | 2411.5 | 0.022 |
| IQ standard score | 103 | 17 | 95 | 14 | 248 | 2367.5 | 0.021 |
| Verbal IQ standard score | 105 | 17 | 98 | 18 | 248 | 2329.0 | 0.021 |
| Nonverbal IQ standard score | 102 | 18 | 95 | 12 | 248 | 2396.5 | 0.023 |
| ADOS-2 CSS Total | 4.7 | 2.3 | 6.6 | 2.8 | 248 | 2058.0 | 0.003 |
| ADOS-2 CSS RRB | 4.7 | 3.1 | 6.1 | 3.0 | 248 | 2310.5 | 0.018 |
| ADOS-2 CSS SA | 5.2 | 2.6 | 6.9 | 2.2 | 248 | 1977.5 | 0.003 |
| SWANaTotal | 1.1 | 0.8 | 0.9 | 0.7 | 240 | 2335.0 | 0.160 |
| SWAN Hyperactivity | 0.98 | 0.95 | 0.6 | 0.8 | 240 | 2149.5 | 0.061 |
| SWAN Inattention | 1.1 | 0.95 | 1.1 | 0.8 | 240 | 2697.0 | 0.495 |
| mFD*(mm) | 0.1 | 0.3 | 0.9 | 3.2 | 248 | 1263.0 | 9.46e-7 |
| N, (%) | N, (%) | df | χ2 | p | |||
| Mock Scan Session Counts (#, %) | 1 (150, 68) 2 (41, 19) 3 + (30, 13) |
1 (12, 41) 2 (9, 31) 3 + (8, 28) |
2 | 10.20 | 0.03 | ||
| Sex (#,%) | Male (173, 78) Female (48, 22) |
Male (26, 90) Female (3, 10) |
1 | 1.978 | 0.184 | ||
|
Primary Dx (#,%) |
ASD (92, 42), ADHD w/o ASD (130, 58) | ASD (21, 72), ADHD w/o ASD (9, 28) | 1 | 6.681 | 0.021 | ||
|
ADHD Presentation (#,%) |
Inattentive (55, 32) Hyper/Imp (6, 4), Combined (88, 52), OS (21, 12) |
Inattentive (5, 33), Hyper/Imp (1, 7), Combined (9, 6), OS (0, 0) |
3 | 2.939 | 0.495 | ||
Abbreviations: ADHD, attention-deficit/hyperactivity disorder; ADOS-2, Autism Diagnostic Observation Schedule, second edition; ASD, autism spectrum disorder; CSS, calibrated severity scores; df, degree of freedom; Dx, diagnosis; mFD, mean framewise displacement (Jenkinson et al., 2002) data from the MRI simulator session; OS, otherwise specified; RRB, restricted and repetitive behaviors; SA, social affect; SD, standard deviation; SWAN, Strengths and weaknesses of attention-deficit/hyperactivity symptoms and normal behaviors (average scores).
12 children (8 passing and 4 failing the MRI simulator training) had missing SWAN parent scores.