|
Beliefs about clinical benefit and evidence of effectiveness over 2000–2003. |
|||||
| Threshold of clinical benefit that would make offering PDT as a treatment worthwhile |
Survey year |
||||
|
|
|||||
| 2000 |
2001 |
2002 |
2003 |
||
|
|
|||||
| To prevent the loss of 3 lines of visual acuity over 2 years |
At least In 1 person for every 7 treated |
22 (19%) |
31 (27%) |
30 (28%) |
36 (37%) |
| In 1 person for every 4 treated |
35 (30%) |
37 (32%) |
38 (35%) |
34 (35%) |
|
| In 1 person for every 2 treated |
21 (18%) |
27 (23%) |
20 (19%) |
16 (17%) |
|
| Further evidence of effectiveness required |
39 (33%) |
20 (19%) |
20 (17%) |
11 (11%) |
|
| Total |
117 |
108 |
115 |
97 |
|
Foy et al. BMC Health Services Research 2005 5:34 doi:10.1186/1472-6963-5-34 |
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