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. 2022 Nov 28;5(1):e40815. doi: 10.2196/40815

Table 4.

Intraclass correlation coefficients (ICC and 95% CI) between individual reference values and mean values of randomly selected periods for heart rate (HR) and daily step count.

Period HR Daily step count

Patients, n ICC (95% CI) Patients, n ICC (95% CI)
1 hour 16 0.68 (0.30-0.87) N/Aa N/A
4 hours 16 0.74 (0.41-0.90) N/A N/A
1 day 16 0.86 (0.65-0.95) 16 0.78 (0.49-0.92)
2 days 16 0.87 (0.68-0.95) 16 0.85 (0.63-0.94)
3 days 16 0.90 (0.75-0.96) 16 0.92 (0.80-0.97)
4 days 16 0.92 (0.80-0.97) 15 0.97 (0.92-0.99)
5 days 15 0.99 (0.96-0.99) 15 0.97 (0.91-0.99)
6 days 15 0.97 (0.91-0.99) 14 0.97 (0.90-0.99)
7 days 13 0.99 (0.95-1.00) 13 0.99 (0.96-1.00)

aN/A: not applicable.