Table 2.
Successful fitting and dropout rates
| Author publication year [reference] | Number | Study design | Initially successful fitting, n (%)a | Dropout at follow-up, n (%)b | Follow-up in months |
|---|---|---|---|---|---|
| Clemons 2004 [24] | 100 | Prospective | 94 (94) | 21 (22) | 0.5 |
| Brincat 2004 [22] | 136 | Retrospective | Unknown | 54 (40) | 4 |
| Clemons 2004 [26] | 59 | Prospective | Unknown | 16 (27) | 12 |
| Mutone 2004 [39] | 407 | Retrospective | 288 (71) | 120 (42) | 0.75 |
| Powers 2004 [42] | 32 | Retrospective | Unknown | 20 (63) | Unknown |
| Broens-Oostveen 2004 [23] | 192 | Retrospective | Unknown | 107 (52) | 64 |
| Bai 2005 [20] | 104 | Retrospective | Unknown | 20 (19) | Unknown |
| Hanson 2005 [30] | 1,216 | Retrospective | 1,043 (86) | 299 (29) | 3 |
| Fernando 2006 [27] | 203 | Prospective | 203 (100) | 106 (52) | 4 |
| Barber 2006 [21] | 42 | Prospective cross-over | 42 (100) | 0 (0) | 3 |
| Maito 2006 [37] | 120 | Retrospective | 103 (86) | 11 (11) | 6 |
| Cundiff 2007 [6] | 134 | Randomised cross-over | 123 (92) | 49 (40) | 3 |
| Komesu 2007 [34] | 64 | Prospective cohort study | Unknown | 28 (44) | 12 |
| Jones 2008 [32] | 90 | Prospective cohort study | Unknown | 48 (53) | 3 |
| Nager 2009 [40] | 255 | Randomised controlled trial | 235 (92) | No follow-up | No follow-up |
| Kuhn 2009 [35] | 73 | Prospective cohort study | Unknown | 40 (55) | 3 |
| Sarma 2009 [43] | 273 | Retrospective | 167 (61) | 144 (86) | 84 |
| Friedman 2010 [28] | 150 | Retrospective | Unknown | 35 (23) | 12 |
| Patel 2010 [41] | 75 | Prospective cohort study | 70 (93) | 21 (30) | 3 |
| Abdool 2010 [19] | 359 | Prospective | 359 (100) | 116 (32) | 12 |
aInitially fitting
bDropout at follow-up