Table 1. QUADAS 2- tool for the evaluation of quality of the included validity studies on clinical assessments for the measurement of leg length discrepancy (n = 25).
| Risk of Bias | Applicability Concerns | ||||||
|---|---|---|---|---|---|---|---|
| Study | Patient Selection | Index Test | Reference Standard | Flow and Timing | Patient Selection | Index Test | Reference Standard |
| Aguilar et al. (2017) | L | H | H | H | L | H | H |
| Aspegren et al. (1987) | U | H | H | U | U | H | H |
| Badii et al. (2014) | L | L | L | L | L | L | L |
| Beattie et al. (1990) | L | L | L | L | L | L | L |
| Betsch et al. (2019) | L | L | U | L | L | L | U |
| Cleveland et al. (1988) | L | L | L | L | L | L | L |
| Cooperstein et al. (2003) | L | L | H | H | L | L | H |
| Cooperstein et al. (2004) | L | L | H | H | L | L | H |
| Edeen et al. (1995) | L | L | L | L | L | L | L |
| Farella et al. (2005) | L | H | H | L | L | H | H |
| Friberg et al. (1988) | L | L | L | L | L | L | L |
| Gross et al. (1998) | L | L | L | L | L | L | L |
| Hanada et al. (2001) | L | L | L | L | L | L | L |
| Harris et al. (2005) | L | L | L | U | L | U | L |
| Jamaluddin et al. (2011) | L | L | L | U | L | L | L |
| Krettek et al. (1996) | L | L | L | L | L | L | L |
| Lampe et al. (1996) | L | L | L | L | L | L | L |
| Montgomery et al. (1995) | L | L | L | L | L | U | L |
| Neelly et al. (2013) | L | L | L | L | L | L | L |
| Petrone et al. (2003) | L | L | L | L | L | L | L |
| Piyakunmala & Sangkomkamhang (2018) | L | U | L | L | L | U | L |
| Rhodes et al. (1995a) | L | H | H | L | L | H | H |
| Rhodes et al. (1995b) | L | L | L | L | L | L | L |
| Sayed-Noor et al. (2009) | L | L | H | L | L | L | U |
| Woerman & Binder-MacLeod (1984) | L | L | L | L | L | L | L |
L = Low; H = High; U = Unclear.