Table 2.
Summary of observed total costs and costs by category, time period, and group
| Costs (UK£) |
|||||||
|---|---|---|---|---|---|---|---|
| Control group |
IDC group |
IDC group vs. control group |
|||||
| n | Mean (SD) | Median (IQR) | n | Mean (SD) | Median (IQR) | Mean cost difference (95% CIa) | |
| 6 months pretrial | |||||||
| Primary care costs | 59 | 148.71 (127.47) | 110.35 (45.25–228.00) | 55 | 173.89 (214.76) | 139.30 (58.50–204.80) | 25.19 (−34.34 to 95.73) |
| Medication costs | 65 | 2288.51 (1466.57) | 2117.87 (1355–10,2762.28) | 65 | 2218.73 (1376.24) | 1889.58 (1286.09–2992.86) | −69.78 (−559.34 to 404.19) |
| Hospital costs | 65 | 9016.96 (15,530.21) | 3970. 66 (926.89–9429.53) | 65 | 9594.43 (11689.18) | 5239.84 (1546.28–12,492.86) | 577.47 (−4314.25 to 5117.96) |
| Total costs | 59 | 11,017.70 (13,993.76) | 6457.54 (3640.09–12,298.51) | 55 | 12,098.36 (11,687.86) | 8440.37 (4275.35–15,710.95) | 1080.66 (−3723.99 to 5532.77) |
| 6-month trial period | |||||||
| Primary care costs | 51 | 158.09 (167.44) | 114.00 (48.50–185.80) | 44 | 114.94 (137.36) | 94.95 (16.13–140.43) | −43.15 (−106.99 to 17.33) |
| Medication costs | 56 | 2412.48 (1598.78) | 2155.53 (1466.92–2882.38) | 53 | 2223.09 (1491.46) | 1885.54 (1115.30–2960.11) | −189.39 (−786.47 to 378.41) |
| Hospital costs | 56 | 8171.67 (11,499.09) | 2500.01 (725.93–10,694.96) | 53 | 6363.83 (10,475.52) | 2300.74 (830.24–5870.96) | −1807.84 (−5787.50 to 2363.64) |
| Total | 51 | 9630.18 (10,157.12) | 4934.24 (2827.77–12,233.30) | 44 | 8454.034 (9080.27) | 5619.20 (2858.52–9574.24) | −1176.14 (−5137.72 to 2861.21) |
| 6 months posttrial | |||||||
| Primary care costs | 44 | 254.87 (432.02) | 148.65 (96.50–251.35) | 43 | 106.83 (120.29) | 77.80 (21.00–157.50) | −148.04 (−302.60 to −43.10) |
| Medication costs | 49 | 2546.56 (1747.33) | 2311.27 (1539.71–3015.07) | 51 | 2138.56 (1459.61) | 1789.58 (1180.99–2865.03) | −407.99 (−1055.17 to 213.84) |
| Hospital costs | 49 | 9888.67 (11,790.19) | 4509.67 (1057.50–14793.60) | 51 | 5822.68 (9441.34) | 2073.99 (742.00–8059.65) | −4065.98 (−8063.06 to 58.29) |
| Total costs | 44 | 11,906.60 (11,542.80) | 7763.20 (3428.68–16027.79) | 43 | 8444.59 (10,470.97) | 3826.27 (2654.72–10,372.63) | −3462.01 (−7865.58 to 1120.83) |
IDC, intradialytic cycling; IQR, interquartile ratio; SD, standard deviation.
a
Based on 5000 bootstrapped samples.