Table 1.

Comparison of total time taken by a lay volunteer recruited at the clinic comparing given addresses with GPS coordinates to locate a participants residence

	Wheillers Farm (n = 10)		Alexandra (n = 10)
	Name and address	PDA/GPS	Name and address	PDA/GPS
Number found	10	10	9	10
Total time taken	5 hours	4 hours	3 hours	1 hr 30 min