Table 2.

Reported problems based on classification of adverse effects

Reported problem	Injury (n = 228)	Malfunction (n = 424)	P value
Battery depletion	9	6	0.057
Generator displacement	11	5	0.007
Pocket erosion	9	0	< 0.001
Infection	21	0	< 0.001
Pain	41	102	0.091
Lack of benefit	70	243	< 0.001
Lead problems	40	30	< 0.001
Other	27	9