Table 6 Relative healthcare cost per month by baseline iPTH, total calcium, and phosphate in sensitivity analyses
Baseline level* | Follow-up duration 3 months (N=5009) | Follow-up duration 6 months (N=4370) | Total healthcare cost > €0 (N=4938) | |||
|---|---|---|---|---|---|---|
n | Relative Cost†(95% CI) | n | Relative Cost†(95% CI) | n | Relative Cost†‡(95% CI) | |
iPTH, pg/mL | ||||||
< 75 | 965 | 0.90 (0.81, 1.00) | 837 | 0.81 (0.72, 0.90) | 937 | 1.00 (0.91, 1.10) |
≥ 75 – < 150 | 1064 | 1.02 (0.92, 1.13) | 928 | 1.00 (0.90, 1.11) | 1052 | 0.99 (0.91, 1.09) |
≥ 150 – ≤ 300 (reference) | 1295 | 1.00 | 1124 | 1.00 | 1284 | 1.00 |
> 300 – ≤ 600 | 1068 | 1.14 (1.03, 1.27) | 926 | 1.05 (0.95, 1.17) | 1060 | 1.10 (1.00, 1.20) |
> 600 | 617 | 1.50 (1.32, 1.70) | 555 | 1.37 (1.20, 1.56) | 605 | 1.40 (1.25, 1.57) |
Total calcium (mmol/L) | ||||||
< 2.10 mmol/L | 766 | 0.96 (0.87, 1.07) | 631 | 0.95 (0.85, 1.06) | 759 | 1.01 (0.92, 1.11) |
≥ 2.10 – ≤ 2.37 mmol/L (reference) | 2773 | 1.00 | 2397 | 1.00 | 2742 | 1.00 |
> 2.37 mmol/L | 1311 | 1.03 (0.94, 1.12) | 1195 | 1.00 (0.92, 1.10) | 1274 | 1.10 (1.02, 1.19) |
Missing | 159 | 1.41 (1.02, 1.96) | 147 | 1.14 (0.82, 1.58) | 163 | 1.52 (1.18, 1.95) |
Phosphate (mmol/L) | ||||||
< 1.13 mmol/L | 764 | 0.77 (0.70, 0.86) | 673 | 0.80 (0.71, 0.89) | 732 | 0.78 (0.71, 0.85) |
≥ 1.13 – ≤ 1.78 mmol/L (reference) | 2889 | 1.00 | 2526 | 1.00 | 2856 | 1.00 |
> 1.78 mmol/L | 1131 | 1.37 (1.25, 1.50) | 960 | 1.44 (1.31, 1.58) | 1116 | 1.38 (1.27, 1.50) |
Missing | 225 | 0.87 (0.64, 1.16) | 211 | 0.85 (0.63, 1.15) | 234 | 0.73 (0.59, 0.92) |