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. 2017 Nov 16;1(1):e000173. doi: 10.1136/bmjpo-2017-000173

Table 5.

Method of measurement (n=169)

 n (%)
Observation 10 s 11 (7%)
Observation 15 s 125 (74%)
Observation 30 s 16 (9%)
Observation 60 s 12 (7%)
Palpation 30 s 4 (2%)
Palpation 60 s 1 (<1%)

*Observation/palpation of chest and abdominal movements.