Replication Data for: Neuroimaging Insights into Recent Suicide Attempters Utilizing the Raven Task

The study initially involved 62 participants. There were 20 individuals in the Attempted Suicide+Major Depressive Disorder (SA+MDD) group, 21 individuals in the Major Depressive Disorder (MDD) patient control group, and 21 individuals in the Healthy Control group. However, 2 cases were excluded from the study during analysis because it was necessary to have an equal number of participants in all three groups to perform a Tukey post hoc analysis. As a result, the final cohort consisted of 20 participants in each group. All participants were between the ages of 18 and 55 and were matched based on chronological age, gender, and educational background.
All the participants signed fully informed consent form before participating in the study. All participants were trained in two separate sessions about performing the task in the fMRI machine.

MRI images were acquired using a Siemens 3.0 Tesla scanner at the Iranian National Brain Mapping Lab (NBML), utilizing a 64-channel head coil. T1-weighted structural scans were obtained following an MPRAGE protocol. The imaging parameters for these scans included a repetition time (TR) of 1810 ms, an echo time (TE) of 3.47 ms, a slice thickness of 1.0 mm, a total of 176 slices, a phase encoding direction of ROW, and a matrix size of 256 × 256 × 176. For the fMRI data, an echo-planar imaging (EPI) sequence was employed, characterized by the following parameters: repetition time (TR) of 3000 ms, flip angle of 80°, 220-time points, echo time (TE) of 30 ms, and 44 axial slices.
The behavioral analysis concentrated on evaluating the participants' performance in the Raven task. Specifically, we assessed the number of correct responses and the response time measured in milliseconds. Furthermore, we calculated the total number of correct responses for each participant to evaluate their reasoning abilities. To ensure accuracy, any outliers in the reaction time (RT) and Number of Correct Responses (NCR) data were identified using a three-standard deviation (SD) criterion. Notably, no outliers were detected in either dataset. Subsequently, the average reaction time and the average number of correct responses were computed for each participant, and further analysis was conducted based on these metrics.