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Table 2 Intrarater reliability of PPG for measuring toe blood pressure and TBI in 60 people with diabetes mellitus

From: Interrater and intrarater reliability of photoplethysmography for measuring toe blood pressure and toe-brachial index in people with diabetes mellitus

Variable Assessor Session 1 Mean (SD) Session 2 Mean (SD) ICC3,1 95 % CI SEM
Toe pressure, mmHg 1 98.7 (29.3) 103.3 (24.3) 0.78 0.65 – 0.86 8.5
Toe pressure, mmHg 2 102.1 (27.3) 97.5 (23.5) 0.79 0.67 – 0.87 7.6
Brachial pressure, mmHg 1 130.7 (24.2) 129.3 (23.3) 0.42 0.19 – 0.61 19.5
Brachial pressure, mmHg 2 129.1 (22.2) 127.7 (23.4) 0.40 0.17 – 0.59 19.4
TBI 1 0.78 (0.26) 0.81 (0.19) 0.51 0.30 – 0.68 0.16
TBI 2 0.81 (0.24) 0.76 (0.18) 0.72 0.57 – 0.82 0.08