Table 5.

Followup rates of patients after THA and TKA grouped by age

Followup (years)	Followup rate (%)
	< 40 years		41–50 years		51–60 years		61–70 years		71–80 years		> 80 years
	THA	TKA	THA	TKA	THA	TKA	THA	TKA	THA	TKA	THA	TKA
2	68	54	63	51	63	48	66	54	59	49	40	38
5	60	52	57	41	60	44	58	48	45	39	19	24
7	56	49	56	31	55	38	54	41	34	29	12	18
10	50	41	50	30	49	34	43	34	21	16	3	10
15	45	54	46	27	49	29	33	25	15	9	1	0
20	15	0	16	20	15	0	10	0	1	3	NA	NA
25	13	0	12	0	0	0	9	0	0	0	NA	NA

NA = not applicable.