Table 4.
Characteristics of different thresholds for the body mass index (BMI), waist circumference and waist hip ratio (WHR), corresponding to a 30%, 40% and 50% screening of the population. Subjects aged 40 to 64 years who were not treated for dyslipidemia. The D.E.S.I.R. Study.
| MEN | WOMEN | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| threshold | sensitivity | specificity | LR1 | (se+sp)/2 | threshold | sensitivity | specificity | LR | (se+sp)/2 | |
| screening with a blood test 30% of the population | ||||||||||
| BMI | 27 kg/m2 | 56 % | 72 % | 2.0 | 64 % | 26 kg/m2 | 54 % | 73 % | 2.0 | 63 % |
| Waist | 96 cm | 54 % | 74 % | 2.1 | 64 % | 83 cm | 65 % | 72 % | 2.3 | 68 % |
| WHR | 0.96 | 49 % | 74 % | 1.8 | 61 % | 0.83 | 67 % | 74 % | 2.5 | 70 % |
| screening with a blood test 40% of the population | ||||||||||
| BMI | 26 kg/m2 | 69 % | 61 % | 1.8 | 65 % | 25 kg/m2 | 62 % | 65 % | 1.8 | 64 % |
| Waist | 93 cm | 65 % | 63 % | 1.8 | 64 % | 79 cm | 76 % | 60 % | 1.9 | 68 % |
| WHR | 0.94 | 63 % | 63 % | 1.7 | 63 % | 0.81 | 74 % | 64 % | 2.0 | 69 % |
| screening with a blood test screening 50% of the population | ||||||||||
| BMI | 25 kg/m2 | 79 % | 47 % | 1.5 | 63 % | 24 kg/m2 | 78 % | 55 % | 1.7 | 66 % |
| Waist | 90 cm | 79 % | 51 % | 1.6 | 65 % | 76 cm | 83 % | 48 % | 1.6 | 65 % |
| WHR | 0.93 | 70 % | 57 % | 1.6 | 63 % | 0.79 | 81 % | 52 % | 1.7 | 66 % |
| optimal thresholds, maximizing the average of the sensitivity and specificity | ||||||||||
| BMI | 26 kg/m2 | 69 % | 61 % | 1.8 | 65 % | 24 kg/m2 | 78 % | 55 % | 1.7 | 66 % |
| Waist | 91 cm | 74 % | 55 % | 1.6 | 65 % | 81 cm | 71 % | 66 % | 2.1 | 69 % |
| WHR | 0.94 | 63 % | 63 % | 1.7 | 63 % | 0.83 | 67 % | 74 % | 2.5 | 70 % |
1
LR: likelihood ratio: sensitivity/(1-specificity)