Table 2.
Quality assessment using Modified Coleman Methodology Score and Newcastle–Ottawa Scale
| Study | Modified Coleman Methodology Score | Newcastle-Ottawa Scale |
|---|---|---|
| Deie et al (2007)14 | 66 | – |
| Intema et al (2011)a,15 | 80 | 8/9 |
| Wiegant et al (2013)a,16 | 80 | 8/9 |
| van der Woude et al (2016)17 | 84 | 9/9 |
| van der Woude et al (2016)b,24 | 89 | – |
| van der Woude et al (2017)a,18 | 83 | 8/9 |
| van der Woude et al (2017)b,25 | 89 | – |
| Jansen et al (2018)a,19 | 85 | 8/9 |
| Jansen et al (2019)b,26 | 89 | – |
Notes: aPublication of the same study at 12, 24, 60, and 108 months; bPublication of the same study at 12 and 24 months.