Table 1.

Results of the accuracy of the Helping Hand™ and the MEMS.

	HH without reminder	HH with reminder	MEMS 18 month battery	MEMS 2 year battery
Event level
Missing registrations	5/420 (1.20%)	1/630 (0.16%)	33/1050 (3.14%)	0/1050 (0%)
Overregistrations	2/420 (0.48%)	1/630 (0.16%)	0/1050 (0%)	0/1050 (0%)
Device level
Missing registrations	3/10 (30%)	1/15 (6.67%)	5/25 (20%)	0/25 (0%)
Overregistrations	2/10 (20%)	1/15 (6.67%)	0/25 (0%)	0/25 (0%)
100% correct functioning	7/10 (70%)	13/15 (87%)	20/25 (80%)	25/25 (100%)