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Sample Characteristics for Randomized Controlled Trials included in the NCPTSD's PTSD Repository.

Values reported as "NA" or not reported "NR" by the study are null values (empty cells).

Population Characteristics for Randomized Controlled Trials included in the NCPTSD's PTSD Repository.

Values reported as "NA" or not reported "NR" by the study are null values (empty cells).

Learn about studies of medications for PTSD, or pharmacotherapy, found in the PTSD-Repository.

Definitions of abbreviations found throughout the PTSD-Repository.

The Harms dataset includes information on serious adverse events and participant withdrawals from the studies due to adverse events. Adverse events are reported as the percent of participants within a treatment group that experienced an adverse event or who withdrew from the study. Detail on the specific adverse event or reason for withdrawal is provided when available. This dataset also reports on the percentage of patients who attempted or completed suicide (when available).

Values abstracted as "NA" or "NR" from the study are represented as null values/empty cells in this dataset.

Study level variables like military status and percent female are included for filtering purposes.

Each study in the PTSD-Repository was coded for risk of bias (ROB) in specific domains as well as an overall risk of bias for the study. Detailed information about the specific coding strategy is available in Comparative Effectiveness Review [CER] No. 207, Psychological and Pharmacological Treatments for Adults with Posttraumatic Stress Disorder. (See our "Risk of Bias" data story.)

Most domains were rated as Yes (i.e., minimal risk of bias), No (i.e., high risk of bias) or Unclear (i.e., bias could not be determined). The overall study rating is based on the domains and is coded as low, medium or high risk of bias. The 4 domains that were included as components of the overall rating include: Selection bias--randomization adequate, allocation concealment adequate, groups similar at baseline and whether they used intention to treat analyses; Performance bias--care providers masked and patients masked; Detection bias--outcome assessors masked; Attrition bias--overall attrition less than or equal to 20% vs over 20%; differential attrition less than or equal to 15% vs over 15%.

Additional items assessed (but not considered as part of the overall rating) include: Reporting bias--all prespecified outcomes reported; Reporting bias--method for handling dropouts; Outcome measures equal valid and reliable; Study reports adequate treatment fidelity based on measurements by independent raters.

Study Interventions for randomized controlled trials included in the NCPTSD's PTSD-Repository.

Each record is an arm of the study, labeled as A, B, C, or D.

Values abstracted as not applicable ("NA") or not reported ("NR") from the study are null values (empty cells).

Learn how risk of bias was included for each study in the PTSD-Repository, with a description of domain elements and overall ratings.

Records references to secondary studies and companion publications included with primary studies in the PTSD-Repository.

These secondary, referenced studies may or may not have contributed data to the abstraction of the listed primary study. The relationship of the secondary study to the primary study is described in some cases in the `Secondary Study Relationship` column.