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Table 4 Factorial design results

From: Innovation in health economic modelling of service improvements for longer-term depression: demonstration in a local health community

Design Self-referral Drop-out reduction Widening non-therapy QALYs Costs Incremental analysis
       ICER Comparatora
1 - - - 14.912 £832 -  
2 - + - 14.935 £1,512 Dominated Compared to 4
4 + - + 14.956 £891 £1,335 Compared to 1
3 + - - 14.964 £1,166 Dominated Compared to 7
6 - - + 14.986 £1,568 Dominated Compared to 7
5 + + - 15.002 £2,065 Dominated Compared to 7
7 - + + 15.019 £1,150 £5,533 Compared to 4
8 + + + 15.042 £1,993 £24,586 Compared to 7
  1. Results ordered from smallest to largest QALYs - = factor not active + = factor active.
  2. a Comparison against the next less-effective non-dominated option.