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Table 3 Performance, \(\mu _{P}\) and \(\sigma _{P}\) where P is defined in Eq. 18, for the different target rates and CPR 30:2 for groups of test persons

From: Chest compression rate measurement from smartphone video

Test

Short hair/topknot

Short + med. hair

All test persons

Long loose hair

60 cpm

87 (11)

86 (9.1)

68 (33)

25.1 (33.5)

110 cpm

94 (2.8)

87 (13)

86 (11)

81.7 (2.1)

CPR 30:2

87 (3.4)

74 (19)

69 (24)

55.6 (38.3)

  1. P gives the % of time throughout the test where the detected rate is within a ±10 cpm limit compared to the recorded true compression rate