Table 2.

Participant and scanning parameter details for each dataset analyzed in the current study.

Dataset	N	Sex (M/F)	Age mean/SD	TR (ms)	TE (ms)	Flip Angle (°)	Slice number	Time points
Cambridge	176*	70/106	20.9/1.9	3000	30	85	47	119
Beijing	176*	70/106	21.2/1.9	2000	30	90	33	235**
NYU Children	89	55/34	11.7/3.2	2000	33	90	33	176
NYU TRT	25	9/16	30.7/8.8	2000	25	90	39	197
J. Power Children	22	11/11	8.5/1	2500	27	90	32	Varied***
J. Power Adolescents	29	22/7	12.1/1.1	2500	27	90	32	Varied
J. Power Adults	26	4/22	23.5/1.4	2500	27	90	32	Varied

^*There were 180 participants in the Beijing Enhanced dataset and 198 participants in the Cambridge dataset. After removing 4 participants (due to inadequate field of view or bad DARTEL spatial normalization) from the Beijing dataset, 176 participants from Cambridge dataset were selected to group-match the Beijing dataset for sex and age.

^**There were no dummy scans and no deletion of first scans from the data released in the Beijing Enhanced dataset; accordingly the first 5 time points from 240 time points were discarded in preprocessing to allow signal equilibrium and participant adaptation to scanner noise. Thus 235 time points were analyzed.

^***There were 1 – 2 scanning sessions for each participant, while 1 – 6 BOLD runs within each session and 76 – 164 time points for each run (for more details: http://fcon_1000.projects.nitrc.org/indi/retro/Power2012.html). We concatenated all the runs and sessions for each subject for analyses after slice timing correction. Of note, the concatenation caused large spikes in FD at the transition time points between runs, thus the transition time points have been removed before subsequent mean FD calculation and examination of motion-BOLD relationship.