Title: Cost-effectiveness of psychotherapy for personality disorders
1- Cost-effectiveness of psychotherapy for
personality disorders - Djøra Soeteman
- Viersprong Institute for Studies on Personality
Disorders - Erasmus Medical Center, Rotterdam
- Harvard School of Public Health, Boston, MA
- ISSPD NYC, August 23, 2009
2SCEPTRE trial
- Patient-level primary data was available from the
largest existing clinical trial of psychotherapy
for personality disorders (N 924) - Dosage specified by treatment setting and
duration - Cluster C PD N 466
- Cluster B PD N 241
3 4Different dosages
- Short-term outpatient excl.
- Long-term outpatient 21.4
- Short-term day hospital 19.0
- Long-term day hospital 23.0
- Short-term inpatient 14.1
- Long-term inpatient 22.5
- Short-term lt 6 months
- Long-term gt 6 months
5Different costs
Psychotherapy dosage Treatment costs ()
Long-term outpatient 10,005
Short-term day hospital 16,813
Long-term day hospital 27,648
Short-term inpatient 25,933
Long-term inpatient 49,260
6Total costs over 5 years
Psychotherapy dosage Treatment costs () Total costs over 5 years ()
Long-term outpatient 10,005 89,936
Short-term day hospital 16,813 89,411
Long-term day hospital 27,648 105,940
Short-term inpatient 25,933 91,620
Long-term inpatient 49,260 119,946
7Just costs?
- Economics is more than just costs
- Effects are equally important
- Cost-effectiveness
- Are the effects worth the additional costs?
- What if the more expensive treatment is more
- effective?
- What are the costs per recovered patient?
8Definition recovered patient
- Clinically significant change (Jacobson and
Truax, 1991) - Recovered statistically reliable ? ends up
within normal limits - Improved statistically reliable ?, but ends
still dysfunctional - Unchanged no statistically reliable ?
- Relapsed or deteriorated statistically reliable
? in the opposite direction - General Symptom Index (BSI/SCL-90)
8
9Effect
Psychotherapy dosage recovered after 12 months
Long-term outpatient 19
Short-term day hospital 26
Long-term day hospital 37
Short-term inpatient 61
Long-term inpatient 41
9
10Costs per recovered patient year
Psychotherapy dosage recovered after 12 months Costs ()
Long-term outpatient 19 64,735
Short-term day hospital 26 46,131
Long-term day hospital 37 45,442
Short-term inpatient 61 32,837
Long-term inpatient 41 57,285
10
11Is that a lot?
- How do we know if x ,- per recovered patient
year concerns a cost-effective treatment
strategy? - Compare it with other interventions
- E.g., compared to lung transplantation or breast
cancer screening - Generic outcome measure required in order to
compare different illnesses - Survival
- Quality of life
12Quality Adjusted Life Years (QALY)
- Life years x quality of life index score
- Quality of life index score
- 1.0 perfect health
- 0.0 death
- Example
- Loss of eyesight
- Quality of life index 0.5
- Life years 80
- 0.5 x 80 40 QALYs
12
13Effect over 5 years
Psychotherapy dosage QALYs
Long-term outpatient 3.30
Short-term day hospital 3.44
Long-term day hospital 3.49
Short-term inpatient 3.57
Long-term inpatient 3.49
14Costs per QALY
Psychotherapy dosage QALYs Costs per QALY ()
Long-term outpatient 3.30 27,239
Short-term day hospital 3.44 26,027
Long-term day hospital 3.49 30,353
Short-term inpatient 3.57 25,674
Long-term inpatient 3.49 34,350
15Interested in both costs and effect
Good
Forget it!
Better
Difficult
Superb!
16Sensitivity analysis
Forget it!
Good
Better
Difficult
Superb!
17Cost-effectiveness plane
Good
Better
17
18Acceptability curve
19Cost-effectiveness of different dosages of
psychotherapy for cluster C PD
Psychotherapy dosage Costs per QALY (threshold value 0 16,570) Costs per QALY (gt 16,570)
Long-term outpatient
Short-term day hospital 1st choice
Long-term day hospital
Short-term inpatient 1st choice
Long-term inpatient
20Cost-effectiveness of different dosages of
psychotherapy for cluster C PD
Psychotherapy dosage Costs per QALY (threshold value 0 16,570) Costs per QALY (gt 16,570) Costs per QALY (threshold value of 40,000)
Long-term outpt
Short-term day h 1st choice
Long-term day h
Short-term inpt 1st choice 1st choice
Long-term inpt
21 22Acceptability curve
23Cost-effectiveness of different modalities of
psychotherapy for cluster B PD
Modality of psychotherapy Costs per QALY (threshold value 0 56,325) Costs per QALY (gt 56,325)
Outpatient 1st choice
Day hospital 1st choice
Inpatient
24Cost-effectiveness of different modalities of
psychotherapy for cluster B PD
Modality of psychotherapy Costs per QALY (threshold value 0 56,325) Costs per QALY (gt 56,325) Costs per QALY (threshold value of 40,000)
Outpatient 1st choice 1st choice
Day hospital 1st choice
Inpatient
25Conclusion
- Cost-effective treatment strategies are
- Cluster C PD
- Short-term inpatient psychotherapy (first choice)
- Short-term day hospital psychotherapy
- Sub-optimal treatment options are
- Long-term day hospital and long-term inpatient
- Cluster B PD
- Outpatient psychotherapy (first choice)
- Day hospital psychotherapy
- Sub-optimal treatment option is
- Inpatient psychotherapy