Estimation of resource utilisation difference between lithium and valproate treatment groups from the VALID study

Figures & data

Table 1.  Difference in resource utilisation between valproate and lithium treatment groups of the VALID study.

	Valproate treatment group (n = 131)	Lithium treatment group (n = 138)	Difference (lithium group – valproate group)
Hospital visits
Total number of visits	421	503	82
Number of visits per patient during the study period (i.e., in 84 days)	3.21	3.65	0.44
Number of visits per patient per day	0.038	0.043	0.005
Number of visits per patient per year	13.87	15.695	1.825
Outpatient visits
Total number of visits	2	15	13
Number of visits per patient during the study period (i.e., in 84 days)	0.02	0.11	0.09
Number of visits per patient per day	0.0001	0.0011	0.0010
Number of visits per patient per year	0.037	0.402	0.365
Days lost at work due to bipolar disorder
Total number of days lost	514.5	907	392.5
Days lost per patient during the study period (i.e., in 84 days)	3.93	6.57	2.64
Days lost per patient per day	0.05	0.08	0.03
Days lost per patient per year	18.25	29.20	10.95

Figure 1.  Cost savings for participating countries or regions of the VALID study (adjusted by PPP). Weighted average value of all participating countries/regions (not the sum of all countries), hence the total cost of all countries may be lower than some individual countries or regions where the PPP are much higher, e.g. Hong Kong and Taiwan.

Figure 2.  Results of sensitivity analyses for individual country and region.

Figure 3.  Results of sensitivity analyses for total annual cost savings adjusted by PPP if all patients were shifted to valproate treatment group.