Table 5.

One way sensitivity analysis. Times are in minutes unless stated otherwise

			Cost of index consultation (£)
Parameter	Default	Range	Virtual outreach (0)	Virtual outreach (1)*	Standard outpatient
Consultants' time: conventional appointment†	11.8	11-19	164	123	30-51
Duration of teleconsultation‡	10.5	3-22	132-212	92-171	32
General practitioners' time: teleconsultation‡	26	10.5-46.5	138-198	97-158	32
Consultants' time: teleconsultation‡	19	10.5-30.5	140-190	100-149	32
Videoconferencing equipment (£)	£52,000	£10 000-100 000	147-182	107-141	32
Videoconferencing equipment: lifespan	5 years	1-7 years	233-159	193-118	32
No of teleconsultations per year	500	100-10 000	244-144	204-103	32

^*As virtual outreach (0) but assumes service can be offered over existing NHS telecommunications network.

^†Range based on mean of values observed in non-participant observation and Royal Free Hampstead NHS Trust cost data, which are based on 11 consultations in a 3½ hour outpatient clinic.

^‡Includes 10.5 minute consultation; range based on extremes observed in non-participant observation.