Table 2

Biases and limits of agreement between blood pressure measurement techniques for each level of blood pressure: effect of BMI. Parenthesis indicate upper and lower limits of agreement

Arterial blood pressure
BMI <30 kg/m2 (n = 24)
BMI >30 kg/m2 (n = 30)

Systolic (mmHg)
     Auscultatory
-16.0 ± 8.1 (+61.8 to -93.8)
0.1 ± 3.8 (+40.8 to -40.7)
     Oscillometric
-16.7 ± 7.3 (+53.0 to -86.4)
-13.3 ± 3.4 (+23.1 to -49.6)
Diastolic (mmHg)
     Auscultatory
10.0 ± 3.3 (+41.6 to -21.5)
11.9 ± 2.9 (+43.7 to -20.0)
     Oscillometric
1.3 ± 2.3 (+23.4 to -20.9)
-7.8 ± 2.9 (+24.2 to -39.8)
Mean (mmHg)
     Auscultatory
3.7 ± 4.7 (+48.7 to -44.4)
11.2 ± 3.0 (+43.7 to -21.2)
     Oscillometric
-2.3 ± 3.2 (+32.5 to -37.5)
-12.3 ± 1.7 (+6.7 to -31.3)

Values are expressed as mean ± standard error.

Araghi et al. Critical Care 2006 10:R64   doi:10.1186/cc4896