Table 3.

Causes of death and death rates as classed by panel in comparison with cause given on death certificate

	Cause of death on certificate		Mortality per 1000 patients years (No of deaths)
	Same	Different	Arm 1	Arm 2
Panel’s opinion
Unknown	0	30*
Ischaemic heart disease	13	6	9.5 (13)	6.7 (10)
Cerebrovascular disease	7	3	2.2 (3)	6.0 (9)
Other cardiovascular disease	1	3	2.2 (3)	3.3 (5)
Cancer	11	0	4.4 (6)	6.0 (9)
Parkinsonian syndrome	19	15	9.5 (13)	23.3 (35)
Respiratory disease	2	2	2.2 (3)	1.3 (2)
Other	2	6	2.2 (3)	4.0 (6)
All causes	55	35	32.1 (44)	50.7 (76)

^*When panel could not reach diagnosis, cause from death certificate was used for calculating mortality.