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 | ||