Abstracts 155s Development of a comprehensive training program was needed to introduce the users to the database’s numerous new enhancements, and functionality of the windows environment. In addition, it would demonstrate that the familiar characteristics of the old database still existed. The training program was a three hour session, which was divided into three basic areas of information; Computer Hardware 8z General Enhancements, Review of Data Entry Form Modifications (Data Entry Screens) and Hands On Experience. Each session was conducted by a member from both the DMR and the CRG. By utilizing the knowledge of both groups we were able to optimize the information available to the users during each training session. User Guides (manuals), designed to be a quick reference, were distributed to all users as well as enhancement specific informational handouts and CRDB mousepads with help line numbers. During this presentation the details of the development of a hands on training program will be discussed. The subjects of training format, visual aids, scheduling issues, and the benefits of hands on training will also be addressed. P73 COMPARISON OF THE ACCURACY OF CENTRALIZED DOUBLE KEY DATA ENTRY AND SINGLE KEY INTERACTIVE DATA ENTRY Nancy Ellis, Thomas Moritx, Lisa Colton, Janet Bannister, Sheryl Davis, Marina Silguero, Rosemary Mannix, Jim Shaw, Dawn Moores, Dine Zullo and Wiim Henderson Hines VA Hospital Hines. Illinois In me VA Cooperative Study, “Processes, Structures, and Outcomes of Care in Cardiac Surgery”, over 1400 variables are being collected on 5000 patients to study many aspects of care at the time of cardiac surgery. Problems associated with managing the large volume of data generated in thii study, specifically, the cumbersome editing process and slow turnaround time from data collection to inclusion in the database, led to the development of an interactive data management system (IDMS), replacing the original system of data collection on paper forms. With the IDMS, data are entered locally and edited interactively on laptop computers and added to the database on transmission from the individual sites. To compare the accuracy of direct interactive data entry by the research nurses and the traditional double key process wherein data are keyed once for entry and again for verification, 347 forms which had been used to collect data for later entry in the IDMS were submitted for the double key procedure. These forms comprised 162 variables and resulted in a total of 30,017 keystrokes. Data files generated by this process were compared to lDMS files using the SAS COMPARE procedure and revealed 146 discrepancies or 4.86 errors per 1000 keystrokes. The discrepancies were of three types: data in the IDMS file different from the paper form due to editing by the research nurses or by the lDMS during data entry (78%); errors made by the research nurses in entering the data from the form (18%); errors made by the keypunch operators due to unclear handwriting (4%). These results show that while data entered interactively are more prone to keystroke errors than are data entered and verified by keypunch operators, this problem is partially offset by a decrease in errors caused by unclear handwriting. In addition, many errors are likely to be corrected in the process of being entered when it is done by a knowledgeable researcher resulting in a significant savings in the time needed to identify and correct out of range and inconsistent data.

P73 Comparison of the accuracy of centralized double key data entry and single key interactive data entry

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Page 1: P73 Comparison of the accuracy of centralized double key data entry and single key interactive data entry

Abstracts 155s

Development of a comprehensive training program was needed to introduce the users to the database’s numerous new enhancements, and functionality of the windows environment. In addition, it would demonstrate that the familiar characteristics of the old database still existed. The training program was a three hour session, which was divided into three basic areas of information; Computer Hardware 8z General Enhancements, Review of Data Entry Form Modifications (Data Entry Screens) and Hands On Experience. Each session was conducted by a member from both the DMR and the CRG. By utilizing the knowledge of both groups we were able to optimize the information available to the users during each training session. User Guides (manuals), designed to be a quick reference, were distributed to all users as well as enhancement specific informational handouts and CRDB mousepads with help line numbers.

During this presentation the details of the development of a hands on training program will be discussed. The subjects of training format, visual aids, scheduling issues, and the benefits of hands on training will also be addressed.

P73 COMPARISON OF THE ACCURACY OF CENTRALIZED DOUBLE KEY

DATA ENTRY AND SINGLE KEY INTERACTIVE DATA ENTRY

Nancy Ellis, Thomas Moritx, Lisa Colton, Janet Bannister, Sheryl Davis, Marina Silguero, Rosemary Mannix, Jim Shaw, Dawn Moores, Dine Zullo and

Wiim Henderson Hines VA Hospital

Hines. Illinois

In me VA Cooperative Study, “Processes, Structures, and Outcomes of Care in Cardiac Surgery”, over 1400 variables are being collected on 5000 patients to study many aspects of care at the time of cardiac surgery. Problems associated with managing the large volume of data generated in thii study, specifically, the cumbersome editing process and slow turnaround time from data collection to inclusion in the database, led to the development of an interactive data management system (IDMS), replacing the original system of data collection on paper forms. With the IDMS, data are entered locally and edited interactively on laptop computers and added to the database on transmission from the individual sites.

To compare the accuracy of direct interactive data entry by the research nurses and the traditional double key process wherein data are keyed once for entry and again for verification, 347 forms which had been used to collect data for later entry in the IDMS were submitted for the double key procedure. These forms comprised 162 variables and resulted in a total of 30,017 keystrokes. Data files generated by this process were compared to lDMS files using the SAS COMPARE procedure and revealed 146 discrepancies or 4.86 errors per 1000 keystrokes. The discrepancies were of three types: data in the IDMS file different from the paper form due to editing by the research nurses or by the lDMS during data entry (78%); errors made by the research nurses in entering the data from the form (18%); errors made by the keypunch operators due to unclear handwriting (4%).

These results show that while data entered interactively are more prone to keystroke errors than are data entered and verified by keypunch operators, this problem is partially offset by a decrease in errors caused by unclear handwriting. In addition, many errors are likely to be corrected in the process of being entered when it is done by a knowledgeable researcher resulting in a significant savings in the time needed to identify and correct out of range and inconsistent data.