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Table 2 Recruitment process and reasons for exclusion (according to [15])

From: Neurochemical sex differences in adult ADHD patients: an MRS study

244 patients from Freiburg and Mannheim
 ↓ (→57 ineligible or not interested in MRI substudy)
187 patients potentially eligible for MRI substudy
 Reasons for further exclusion pACC Cerebellum
  Missing, incomplete or pathological psychometric documentation 8 8
  Study participation canceled or consent withdrawal or non-compliance* 14 14
  Metal implant 8 8
  Claustrophobia 9 9
  Abortion of measurement 5 5
  Different voxel position 0 12
  Failure in measurement protocol, data transfer, or data analysis 12 11
  Bad spectral quality 8 6
  New diagnosis of neurocytoma 1 1
  Post hoc information about exclusion criteria 9 9
113 high quality pACC (57 mADHD:56 fADHD) and 104 cerebellar spectra (52 mADHD:52 fADHD)
 Exclusion due to not fulfilling matching criteria 17 (9 mADHD:8 fADHD) 20 (10 mADHD:10 fADHD)
96 spectra (48 mADHD:48 fADHD) for pACC region and 84 (42 mADHD:42 fADHD) for cerebellar region
  1. Abbreviations: pACC pregenual anterior cingulate cortex, mADHD adult male ADHD patients, fADHD adult female ADHD patients
  2. *Not showing up at the measurement dates