# Table 6 Uncertainty.

Changed parameter or method Percentage change in parameter Percentage change in total cost Percentage change in HC cost Total cost (95% confidence interval) Healthcare cost (95% confidence interval)
Base case scenario 0.0 0.0 0.0 2069 (1283-2856) 326 (273-380)
Parameters, one-way sensit. analysis
PT cost per consultation +30 2.8 18.0 2128 (1339-2917) 385 (317-453)
-30 -2.8 -18.0 2011 (1227-2795) 268 (228-307)
GP cost per consultation +50 2.3 14.6 2117 (1328-2906) 374 (318-430)
-50 -2.3 -14.6 2022 (1238-2805) 279 (227-330)
Sick leave cost per day +30 25.3 0.0 2592 (1575-3610) 326 (273-380)
-30 -25.3 0.0 1546 (991-2102) 326 (273-380)
X-ray cost per consultation +30 0.3 1.7 2075 (1288-2861) 332 (278-385)
-30 -0.3 -1.7 2064 (1278-2850) 321 (268-374)
Ultrasound cost per consultation +30 0.2 1.3 2074 (1287-2860) 330 (277-384)
-30 -0.2 -1.3 2065 (1279-2851) 322 (269-375)
Medicine, unit used +100 0.2 1.1 2073 (1286-2859) 330 (276-383)
-50 -0.1 -0.5 2068 (1281-2854) 324 (271-378)
Parameters, multi-way sensit. analysis
PT, GP per consultation +30. +50 5.1 32.6 2176 (1384-2967) 432 (364-502)
-30. -50 -5.1 -32.6 1963 (1182-2744) 220 (183-257)
PT, GP, x-ray, ultras. per consultation As for one- way sensit. a. 5.7 35.8 2186 (1394-2979) 443 (373-513)
-5.7 -35.8 1952 (1172-2733) 209 (173-246)
Method, one-way sensitivity analysis
Sick leave cost based on friction method -61.3 -51.6 0.0 1001 (685-1316) 326 (273-380)
1. Calculation of percentage change and new levels of total costs and health service costs by changing the unit costs of the different cost components