About this Dataset

Risk Of Bias

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.
Organization: Department of Veterans Affairs
Last updated: 2023-09-28T17:54:10.988027
Tags: ptsd-repository, risk-of-bias

Tables

Table 1

@usgov.va_gov_risk_of_bias_af03c.table_1

188.6 kB
550 rows
55 columns

CREATE TABLE table_1 (
  "study_id" VARCHAR,
  "author_year" VARCHAR  -- Author, Year,
  "study_publication_year" BIGINT,
  "bias_due_to_randomization_random_sequence_generated" VARCHAR  -- Bias Due To Randomization: Random Sequence Generated,
  "bias_due_to_randomization_allocation_concealed" VARCHAR  -- Bias Due To Randomization: Allocation Concealed,
  "bias_due_to_randomization_groups_dissimilar_at_baseline" VARCHAR  -- Bias Due To Randomization: Groups Dissimilar At Baseline,
  "bias_due_to_randomization_domain_rating" VARCHAR  -- Bias Due To Randomization: Domain Rating,
  "bias_due_to_deviations_from_intended_interventions_par_dd758aaa" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Participants Unmasked,
  "bias_due_to_deviations_from_intended_interventions_car_29e809df" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Carers Unmasked,
  "bias_due_to_deviations_from_intended_interventions_dev_60ff49b2" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Deviations Arose Due To Trial Context,
  "bias_due_to_deviations_from_intended_interventions_dev_21cca926" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Deviations Likely Affected Outcomes,
  "bias_due_to_deviations_from_intended_interventions_dev_9e22d15f" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Deviations Balanced Between Groups,
  "bias_due_to_deviations_from_intended_interventions_sta_c201ed6f" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Statistical Analysis Appropriate,
  "bias_due_to_deviations_from_intended_interventions_sub_b7d41909" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Substantial Impact If Analysis Inappropriate,
  "bias_due_to_deviations_from_intended_interventions_dom_4a0f1738" VARCHAR  -- Bias Due To Deviations From Intended Interventions: Domain Rating,
  "bias_due_to_missing_outcome_data_low_outcome_attrition" VARCHAR  -- Bias Due To Missing Outcome Data: Low Outcome Attrition,
  "bias_due_to_missing_outcome_percent_overall_outcome_attrition" VARCHAR  -- Bias Due To Missing Outcome Data: Percent Overall Outcome Attrition,
  "bias_due_to_missing_outcome_result_not_biased_by_missi_04eca68f" VARCHAR  -- Bias Due To Missing Outcome Data: Result Not Biased By Missing Outcome Data,
  "bias_due_to_missing_outcome_missingness_could_affect_outcome" VARCHAR  -- Bias Due To Missing Outcome Data: Missingness Could Affect Outcome,
  "bias_due_to_missing_outcome_missingness_likely_affected_outcome" VARCHAR  -- Bias Due To Missing Outcome Data: Missingness Likely Affected Outcome,
  "bias_due_to_missing_outcome_percent_differential_outco_d7e428a2" VARCHAR  -- Bias Due To Missing Outcome Data: Percent Differential Outcome Attrition,
  "bias_due_to_missing_outcome_data_domain_rating" VARCHAR  -- Bias Due To Missing Outcome Data: Domain Rating,
  "bias_in_measurement_of_the_outcome_inappropriate_outco_01264e49" VARCHAR  -- Bias In Measurement Of The Outcome: Inappropriate Outcome Measurement,
  "bias_in_measurement_of_the_outcome_outcome_measurement_a7fdedbc" VARCHAR  -- Bias In Measurement Of The Outcome: Outcome Measurement Differed Across Groups,
  "bias_in_measurement_of_the_outcome_outcome_assessors_u_261be420" VARCHAR  -- Bias In Measurement Of The Outcome: Outcome Assessors Unmasked (Primary Outcome),
  "bias_in_measurement_of_the_outcome_primary_outcome_name" VARCHAR  -- Bias In Measurement Of The Outcome: Primary Outcome Name,
  "bias_in_measurement_of_the_outcome_outcome_assessment__d55a4833" VARCHAR  -- Bias In Measurement Of The Outcome: Outcome Assessment Could Be Influenced By Knowledge Of Intervention (Primary Outcome),
  "bias_in_measurement_of_the_outcome_outcome_assessment__df63aeb6" VARCHAR  -- Bias In Measurement Of The Outcome: Outcome Assessment Likely Influenced By Knowledge Of Intervention (Primary Outcome),
  "bias_in_measurement_of_the_outcome_domain_rating_prima_f254ff92" VARCHAR  -- Bias In Measurement Of The Outcome: Domain Rating (Primary Outcome),
  "bias_in_measurement_of_the_outcome_outcome_assessors_u_ee0c3d92" VARCHAR  -- Bias In Measurement Of The Outcome: Outcome Assessors Unmasked (Secondary Outcome),
  "bias_in_measurement_of_the_outcome_secondary_outcome_name" VARCHAR  -- Bias In Measurement Of The Outcome: Secondary Outcome Name,
  "bias_in_measurement_of_the_outcome_outcome_assessment__bc17d087" VARCHAR  -- Bias In Measurement Of The Outcome: Outcome Assessment Could Be Influenced By Knowledge Of Intervention (Secondary Outcome),
  "bias_in_measurement_of_the_outcome_outcome_assessment__a0c7cb99" VARCHAR  -- Bias In Measurement Of The Outcome: Outcome Assessment Likely Influenced By Knowledge Of Intervention (Secondary Outcome),
  "bias_in_measurement_of_the_outcome_domain_rating_secon_7943380c" VARCHAR  -- Bias In Measurement Of The Outcome: Domain Rating (Secondary Outcome),
  "bias_in_selection_of_reported_result_results_analyzed__4d97fd96" VARCHAR  -- Bias In Selection Of Reported Result: Results Analyzed Based On Pre-specified Plan,
  "bias_in_selection_of_reported_result_results_likely_se_692aec72" VARCHAR  -- Bias In Selection Of Reported Result: Results Likely Selected From Multiple Eligible Outcome Measurements,
  "bias_in_selection_of_reported_result_results_likely_se_14278eeb" VARCHAR  -- Bias In Selection Of Reported Result: Results Likely Selected From Multiple Eligible Analyses,
  "bias_in_selection_of_reported_result_domain_rating" VARCHAR  -- Bias In Selection Of Reported Result: Domain Rating,
  "overall_rob_assessment_primary_outcome" VARCHAR  -- Overall RoB Assessment (Primary Outcome),
  "overall_rob_assessment_secondary_outcome" VARCHAR  -- Overall RoB Assessment (Secondary Outcome),
  "ptsdpubs_id" DOUBLE,
  "year_added_to_repository" BIGINT,
  "study_class" VARCHAR,
  "citation" VARCHAR,
  "total_n_randomized" BIGINT,
  "military_status" VARCHAR,
  "active_duty_military" DOUBLE,
  "veteran" DOUBLE,
  "community" DOUBLE,
  "female_percent" DOUBLE,
  "race_ethnicity_reported" VARCHAR,
  "male_percent" DOUBLE,
  "trauma_type" VARCHAR,
  "trauma_detail" VARCHAR,
  "treatment_focus_study_level" VARCHAR  -- Treatment Focus (Study Level)
);