Sickness certification in general practice: a comparison of electronic records with self-reported work absence

Abstract

Background Reports of work absence usually come from self-report or company absence records; however, these records are limited to just one company. Electronic recording of sickness certification in primary care medical records may provide an alternative source of data, but its relation to other sources of sickness absence information is unknown. Comparing general practitioner electronic sickness certification records with self-reported work absence would enable the comparability of these electronic records to be established. Aim To investigate the comparability of electronic medical records of sickness certification in primary care, with self-reported work absence. Methods Analysis included 292 primary care low-back pain consulters who consented to medical record review. A within-group design was used to match electronic records of sickness certification with self-reported sickness absence. Findings Overall 95% of the electronic medical records of sickness certification matched with self-reported absences; 96% in employed consulters and 95% in unemployed consulters. In all, 94% of employed participants were a direct match, 2% a consistent match and 4% a mismatch. Including consistent matches increased matching to 97% in employed consulters and to 100% in unemployed consulters. Electronic records of sickness certification in general practice are a useful method of analysing sickness absence in the population, as they are comparable with other sources of data. Additionally, electronic records of sickness certification will allow the investigation of sickness absence where data from one company are too limited and self-report is not available or unreliable. To facilitate the use of electronic medical records of sickness certification, data need to be accurately recorded and evaluated or audited to ensure completeness and validity. Furthermore, methods should be developed to ensure straightforward linkage between sickness certification records and other data held on the electronic medical record.