Fig. 3

Management provided by the GP for knee OA patients during the total observation period, from 6 months before the index date to 3 years after the index date. Note: Percentages are based on the management on patient level. This means that patients were included as having a management modality when the modality was recorded at least once in the given observation period. The percentage is based on the total number of patients rather than the total number of management events. For example, during the total observation period (grey bar in Fig. 3) a referral of diagnostic work-up was recorded at least once in 68.6% of the patients. During 6 months before index date (yellow bar in Figs. 3), 40.2% of the patients had at least one record of X-ray referral and 34.4% of the patients at least one record after the index date (blue bar in Fig. 3)