|
| Author, year | Specimen randomization | Single operator protocol implementation | Blinding of the testing machine operator | Presence of a control group | Standardization of sample preparation | Failure mode evaluation | Following the manufacturer’s instructions | Description of sample size calculation | Discarded unacceptable samples | Risk of bias |
|
| Akin et al., 2011 [9] | Yes | NM | NM | Yes | Yes | No | Yes | NM | Yes | Medium |
| Akin et al., 2011 [11] | Yes | NM | NM | Yes | Yes | Yes | Yes | NM | Yes | Low |
| Khakbaz et al., 2019 [75] | Yes | NM | NM | Yes | Yes | No | Yes | NM | Yes | Medium |
| Gorler et al., 2015 [77] | Yes | NM | NM | Yes | Yes | No | Yes | Yes | Yes | Low |
| Gundogdu et al., 2014 [33] | Yes | NM | NM | Yes | Yes | Yes | Yes | Yes | Yes | Low |
| Kulkarni et al., 2011 [78] | Yes | NM | NM | Yes | Yes | Yes | Yes | NM | Yes | Low |
| Nakhaei et al., 2016 [76] | Yes | NM | NM | Yes | Yes | No | Yes | NM | Yes | Medium |
| Surapaneni et al., 2013 [79] | Yes | NM | NM | Yes | Yes | Yes | Yes | No | Yes | Low |
| Usumez et al., 2004 [30] | Yes | Yes | No | Yes | Yes | Yes | Yes | No | Yes | Low |
| Vishwanath et al., 2016 [80] | Yes | NM | NM | Yes | Yes | No | Yes | Yes | NM | Medium |
| Hamanaka et al., 2017 [81] | Yes | NM | NM | Yes | Yes | Yes | Yes | NM | Yes | Low |
| Hawraa Khalid et al., 2017 [82] | Yes | NM | NM | Yes | Yes | No | Yes | NM | Yes | Medium |
| Khanna et al. 2015 [83] | Yes | NM | NM | Yes | Yes | Yes | Yes | NM | Yes | Low |
| Takahashi et al., 2001 [29] | Yes | NM | NM | Yes | Yes | No | Yes | NM | Yes | Medium |
| Jacobsen et al., 1997 [31] | Yes | NM | NM | Yes | Yes | Yes | Yes | NM | Yes | Low |
| Korkmaz et al., 2013 [32] | Yes | NM | NM | Yes | Yes | Yes | Yes | NM | Yes | Low |
|
