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. 2026 Jul 20;14:e85425. doi: 10.2196/85425

Table 2.

Median adherence rates for study activities across disease groups.


Long COVID-19 (n=49) Pancreatitis (n=44) PCDa (n=51) Sarcoidosis (n=50) VCPb disease (n=44)
Study weeks, mean (SD) 14.2 (3.6) 14.5 (3.2) 11.9 (3.5) 18.0 (0.6) 13.7 (3.1)
Retention, n (%) 49 (100) 42 (95.5) 47 (92.2) 47 (94.0) 44 (100)
Biweekly check-in calls (%), median (IQR) 100 (100-100) 85.7 (61.7-100) 71.4 (46.4-92.9) 85.7 (71.4-100) 100 (100-100)
Daily quick activities (%), median (IQR) 36.8 (22.1-60.3) 39.9 (23.5-68.2) 39.8 (24.2-55.4) 51.2 (25.1-67.3) 43.1 (29.7-64.2)
Weekly in-app survey (%), median (IQR) 90.9c (73.3-100) 97.2c (89.2-100) 100c (80.2-100) —d 72.4e (54.2-80.0)
Biweekly in-app survey (%), median (IQR) 100f (75-100) 100f (88.9-100) 100f (79.2-100) 100f (89.5-100) 100f (100-100)
Oura ring use (%), median (IQR) 89.3 (71.4-95.0) 67.1 (46.2-92.5) 26.3 (15.5-50.4) 66.4 (52.6-82.1) 83.9 (65.1-94.1)
Empatica Embrace Plus use (%), median (IQR) 69.9 (39.4-98.2) 69.7 (29.9-93.1) — — —
MIR Spirometer use (%), median (IQR) — — 50.0 (33.3-62.5) — 62.5 (47.2-81.7)
Lumia use (%), median (IQR) 62.5 (33.7-80.0) — — — —

aPCD: primary ciliary dyskinesia.

bVCP: valosin-containing protein.

cWeekly Fatigue Assessment Scale.

dNot available.

eWeekly Pain Severity Scale.

f9-item Patient Health Questionnaire.