Table 3.

Health related quality of life (Health state analysis)

Health state	Frequency	%	Health state	Frequency	%
11,111	12	4.0	22,111	1	0.3
11,112	43	14.3	22,112	2	0.7
11,113	9	3.0	22,113	1	0.3
11,121	2	0.7	22,122	2	0.7
11,122	34	11.3	22,211	1	0.3
11,123	14	4.7	21,133	2	0.7
11,131	1	0.3	21,212	2	0.7
11,132	1	0.3	21,221	2	0.7
11,133	5	1.7	21,222	4	1.3
11,212	8	2.7	21,232	1	0.3
11,213	3	1.0	21,311	1	0.3
11,221	3	1.0	21,322	3	1.0
11,222	24	8.0	21,331	1	0.3
11,223	14	4.7	22,212	1	0.3
11,232	2	0.7	22,213	1	0.3
11,233	3	1.0	22,222	9	3.0
11,312	1	0.3	22,223	4	1.3
11,313	2	0.7	22,233	2	0.7
11,322	1	0.3	22,323	5	1.7
11,323	1	0.3	22,333	1	0.3
12,113	1	0.3	23,222	1	0.3
12,121	3	1.0	23,321	2	0.7
12,122	1	0.3	23,333	1	0.3
12,123	2	0.7	31,112	1	0.3
12,213	1	0.3	31,222	1	0.3
12,222	6	2.0	32,211	2	0.7
12,223	9	3.0	32,222	1	0.3
12,233	3	1.0	32,223	1	0.3
12,321	1	0.3	32,233	4	1.3
12,332	1	0.3	32,322	1	0.3
12,333	2	0.7	32,323	1	0.3
13,212	2	0.7	32,333	2	0.7
13,222	1	0.3	33,221	1	0.3
21,111	3	1.0	33,222	1	0.3
21,112	1	0.3	33,322	1	0.3
21,121	1	0.3	33,323	1	0.3
21,122	5	1.7	33,332	1	0.3
21,123	1	0.3	33,333	3	1.0

The EQ-5D descriptive profile consists of five dimensions (mobility, self-care, usual activities, pain/discomfort and anxiety/depression), each of which can take one of three responses. The response record three levels of severity (no problems/some or moderate problems/extreme problems) within a particular EQ-5D dimension. A total of 243 possible health states is defined in this way. Each state is referred to in terms of a 5 digit code (e.g. state 11,111 indicates no problems on any of the 5 dimensions, while state 11,223 indicates no problems with mobility and self care, some problems with performing usual activities, moderate pain or discomfort and extreme anxiety or depression)