| Variable name | Definition | Variable value | Variable type |
| Asymmetry | Temperature difference (in Celsius) between the right and the left breasts | If difference < 1°C, then value = 5, difference between 1°C and 2°C, the value is 10, and difference > 2°C, the value is 15 | Nominal (5, 10, 15) |
| Thermovascular network | Number of veins with the highest temperature | If the visualization is abundant vascularity, the value is 15, if it is moderate, the value is 10, and if it is slight, the value is 5 | Nominal (5, 10, 15) |
| Curve pattern | Heat area under the breast | If heat visualized is abundant, the value is 15, if it is moderate, the value is 10, and if it is slight, the value is 5 | Nominal (5, 10, 15) |
| Hyperthermia | Hottest point of the breast | If there is at least one hottest point, the value is 20 and otherwise the value is 0 | Binary (0, 20) |
| 2c | Temperature difference between the hottest points of the two breasts | If difference between 1 and 10, the value is 10, difference between 11 and 15, the value is 15, difference between 16 and 20, the value is 20 and if difference > 20, the value is 25 | Nominal (10, 15, 20, 25) |
| F unique | Amount of hottest points | If sum = 1, the value is 40, if sum = 2, the value is 20, if sum = 3, the value is 10, and if sum > 3, the value is 5 | Nominal (5, 10, 20, 40) |
| 1c | Hottest point in only one breast | If the hottest point is only one breast, the value is 40 and if the hottest point is both breasts, the value is 20 | Binary (20, 40) |
| Furrow | Furrows under the breasts | If the furrow is visualized, the value is positive; if not,the value is negative | Binary (0, 1) |
| Pinpoint | Veins going to the hottest points of the breasts | If the veins are visualized, the value is positive; if not, the value is negative | Binary (0, 1) |
| Hot center | The center of the hottest area | If the center of the hottest is visualized, the value is positive; if not, the value is negative | Binary (0, 1) |
| Irregular form | Geometry of the hot center | If the hot center is visualized like a nongeometrical figure, the value is positive; if not, the value is negative | Binary (0, 1) |
| Histogram | Histogram in form of a isosceles triangle | If the histogram is visualized as a triangle form, the value is positive; if not, the value is negative | Binary (0, 1) |
| Armpit | Difference temperature between the 2 armpits | If the difference = 0, the value in both is negative; if not, the value is positive; consequently the other is negative | Binary (0, 1) |
| Breast profile | Visually altered profile | If an altered profile is visualized abundantly, the value is 3, if it is moderate, value is 2, if it is small, the value is 1, and if it does not exist, the value is 0 | Binary (0, 1) |
| Score | The sum of values of the previous 14 variables | If the sum < 160, then the value is negative for cancer; if the sum ≥ 160, the value is positive for cancer | Binary (0, 1) |
| Age | Age of patient | If the age < 51, the value is 1, if the age between 51 and 71, the value is 2, and if age > 71, the value is 3 | Binary (0, 1) |
| Outcome | The result is obtained via open biopsy | The values are cancer or no-cancer | Binary (0, 1) |
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