Table 3

Sensitivity and scenario analyses for the peer-led group exercise programme (showing health gain (QALYs), costs and ICERs for population-level results for the lifetime of the modelled cohort, 95% UI within brackets)

InterventionQALYs gainedNet cost (NZ$ m)ICER (NZ$)
Peer-led group-based exercise programme for adults aged 65+ years (as per table 1)42 000 (21 800 to 65 600)535 (311 to 730)14 100 (5900 to 30 700)
Sensitivity analysis: discount rate=0%62 500 (32 800 to 96 000)817 (554 to 1046)14 300 (7230 to 28 600)
Sensitivity analysis: discount rate=6%30 300 (15 500 to 47 500)378 (180 to 553)14 200 (4700 to 33 000)
Scenario A: targeted to adults aged 65–74 years29 400 (13 700 to 45 800)354 (188 to 488)13 800 (5000 to 32 900)
Scenario B: targeted to adults aged 75–84 years11 000 (5300 to 17 100)154 (95 to 207)15 800 (6800 to 35 300)
  • All results rounded to three meaningful digits.

  • ICER, incremental cost-effectiveness ratio; NZ, New Zealand; QALY, quality-adjusted life-years; UI, uncertainty interval.