45 Practical experience with the use of electronic headache diaries 2 Table 1. Baseline characteristics of the study population E-diary patients (total) E-diary patient questionnaire (subgroup) Video consultation questionnaire Healthcare providers Number of participants, n 954 532 52 23 Years of age, mean ± SD 46 ± 13.0 49 ± 12.3 45 ± 13.6 a Female sex, n (%) 760 (81.0) 418 (79.0) 46 (85.2) a Probable CM, n (%) 835 (42.9) 542 (44.5) NA NA E-diary compliance (%), median [IQR] 97 [90-99] 97 [89-99] NA NA Clinical patientsb, n (%) 740 (78.7) 410 (77.4) 52 (100.0) NA a For all health care providers, questionnaire data was collected fully anonymous. b Clinical patients are those that attended the outpatient headache clinic, the other patients participated in research of the Leiden Headache Center. Predictors of E-diary compliance Median patient follow-up time was 181 (IQR 84–240) days in a total follow-up period of 340 days. Of the total 162,846 registered days, 10.8% were missing days. Median compliance was 96.4% (IQR 85.2–99.1%), visualized in Fig. 2. Of all patients, 755 (79.1%) achieved a compliance rate of ≥80%. Linear regression analysis showed that older age (β = 0.20, p < 0.001), female sex (β = 2.61, p = 0.005), a higher reported e-diary grade (β = 2.62, p < 0.001), and filling out the e-diary for clinical purposes (β = 1.67, p = 0.04) were all positively associated with compliance. A probable diagnosis of chronic migraine was not correlated with compliance (p = 0.40). Finally, the weekday of completion of the e-diary was similar across all days (p = 1.00). Patient satisfaction Among the 535 patients with migraine who responded to the patient questionnaire on satisfaction with the E-diary, 12 individuals (2.2%) did not complete this specific questionnaire, and three patients (0.6%) were excluded as they had not yet started to use the E-diary. The remaining 520 patients rated their satisfaction with the E-diary with an overall median grade of 8 (IQR 7-8), as shown in Figure 3A. In accordance, Figure 3B shows 66.7% (347/520) of patients reported being (very) satisfied with the E-diary. As for usefulness in helping patients follow their physicians’ instructions, the majority of patients (68.8%, 358/520) rated the app neutral to (very) useful for following up instructions (Figure 3C). The general user-friendliness of the app is shown in Figure 3D, with 85.0% (442/520) of patients reporting a (very) high user-friendliness. The majority of patients (75.2%, 391/520) found that the E-diary provided an adequate
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