This README describes the data file being made available on DataDryad linked to the paper: Doshi P, Jefferson T. Clinical study reports of randomised controlled trials: an exploratory review of previously confidential industry reports. BMJ Open 2013;3:e002496. doi:10.1136/bmjopen-2012-002496 Audited table of extracted and derived variables Data were extracted on MS Word extraction tables. These tables were then brought into Microsoft Excel. Subsequently selected variables were audited (double-checked) and are presented in this Excel file. The Excel file contains multiple "sheets" (worksheets). Their contents are described below. ########################## Sheet: Selected Qs for ms ########################## This sheet contains all original data for all results presented in the manuscript. EXTRACTED VARIABLES Drug_Trial Name of drug and trial ID Drug Name of drug (used for Q004 Extractor's name (Initials) Q009 Total length of CSR obtained, in PDF pages Q010 List CSR completion date Q011 Is the trial published? Q012 If Y give publication citation Q013 If Y give publication size (in pages) Q030 If Y, how long is the synopsis (in pages)? Q060 Does the CSR contain a section on efficacy evaluation? Q063 If Y, how long is the efficacy evaluation (in pages)? Q064 Does the CSR contain a section on safety evaluation? Q067 If Y, how long is the safety evaluation (in pages)? Q072 Does the CSR contain a section on tables, figures and graphs referred to but not included in the text? Q075 If Y, how long is the tables, figures and graphs referred to but not included in the text (in pages)? Q082 Does the CSR include the study Protocol? Q084 If Y, how long is the study Protocol (in pages)? Q088 Does the CSR contain a section on Sample case report form (unique pages only)? Q090 If Y, how long is the section on Sample case report form (unique pages only) (in pages)? Q109 Does the CSR contain a section on Documentation of statistical methods? Q111 If Y, how long is the section on Documentation of statistical methods (in pages)? Q138 Does the CSR contain a section on Individual efficacy response data? Q140 If Y, how long is the section on Individual efficacy response data (in pages)? Q141 Does the CSR contain a section on Adverse event listings (each patient)? Q143 If Y, how long is the section on Adverse event listings (each patient) (in pages)? Q150 Does the CSR contain a section on Other Case Report Forms submitted? Q152 If Y, how long is the section on Other Case Report Forms submitted (in pages)? Compression factor Compression factor, calculated by dividing total length of CSR pages obtained (Q009) by publication size (Q013) NOTES Many fields have a "NOTE" field as well (e.g. there is a Q009 and a Q009_NOTE field). The "NOTE" field is where we have written in our notes to help explain or provide references and other documentation relevant to the extracted variable. ########################## Sheet: Tables ########################## This sheet contains the table used in the manuscript. ########################## Sheet: Table Compression factor ########################## This sheet contains calculations for the compression factor, by drug.