Table 1 Repeatability and reliability for fasting indices obtained from insulin and glucose concentrations measured on two consecutive days in 60 horses
From: Evaluation of fasting plasma insulin and proxy measurements to assess insulin sensitivity in horses
Variable | Day 1 Median (IQR) | Day 2 Median (IQR) | CV% (CI) | ICC | CR% | Paired t-test (between-test days) P value |
|---|---|---|---|---|---|---|
Insulin sensitivity: | ||||||
1/insulin (mL/µIU) | 0.088 (0.032–0.22) | 0.076 (0.032–0.17) | 23.8 (19.2–27.7) | 0.95 | 65 | 0.10 |
RISQI ([µIU/mL]−0.5) | 0.30 (0.18–0.47) | 0.28 (0.18–0.41) | 12.2 (9.7–14.2) | 0.95 | 33 | 0.14 |
QUICKI | 0.33 (0.28–0.39) | 0.32 (0.28–0.37) | 3.9 (2.9–4.6) | 0.94 | 10 | 0.06 |
β-cell response: | ||||||
FI (µIU/mL) | 11.4 (4.7–31.9) | 13.2 (6.0–31.5) | 23.8 (19.2–27.7) | 0.95 | 65 | 0.11 |
MIRG ([µIU]2 /[10\(\times\)mL\(\times\)mg) | 4.9 (3.1–8.5) | 13.2 (6.0–8.8) | 17.5 (13.0–21.1) | 0.89 | 47 | 0.03 |
HOMA-β | 126 (75–306) | 125 (81–257) | 25.3 (21.3–28.7) | 0.91 | 70 | 0.26 |