Clinical characteristic | True negative Measurements of fractionated plasma metanephrines (n = 264) | False positive Measurements of fractionated plasma metanephrines (n = 46) | Significance testing results |
---|---|---|---|
Gender (females/n) | 142/264 | 26/46 | P = 0.73 (χ2 = 0.12, df = 1) |
Age (mean, SD years) | 50.7 (15.03) | 57.3 (14.6) | P = 0.007 (t = 2.81, df = 63) |
Systolic blood pressure (mean, SD mmHg) | 147 (26) (n = 260) | 153 (32) | P = 0.24 (t = 1.19, df = 56) |
Diastolic blood pressure (mean, SD mmHg) | 87 (12) (n = 260) | 89 (15) | P = 0.39 (t = 0.87, df = 57) |
Number of antihypertensive agents currently used (mean, SD) | 1.4 (1.5) | 1.6 (1.3) | P = 0.28 (t = 1.09, df = 70) |
Known diagnosis of obstructive sleep apnea | 15/264 | 4/46 | P = 0.43 (χ2 = 0.62, df = 1) |