Study (year) | Study design | Country | Study period | Sample size | Reported stricture rate (%) | ||
---|---|---|---|---|---|---|---|
M/F | BW < 2500 g | BW > 2500 g | |||||
Michaud et al. (2001) [14] | Retrospective cohort single-center | France | (Five years) | 50 | 37/45 | 30 | 47 |
Allin et al. (2014) [15] | Prospective cohort multi-center | UK and Ireland | 2008–2009 | 76 | 40/34 | 28 | 43 |
Nice et al. (2016) [16] | Retrospective cohort single-center | USA | 1999–2014 | 121 | 20/24 | NA | NA |
Okata et al. (2016) [7] | Retrospective cohort single-center | Japan | 2000–2015 | 28 | 53/31 | NA | NA |
Stenström et al. (2017) [17] | Retrospective Case-Control single-center | Sweden | Case 2010–2014, Control 2001–2009 | 93 | 39/42 | 43 | 42 |
Donoso et al. (2017) [8] | Retrospective cohort single-center | Sweden | Case 2005–2013, Control 1994–2004 | 126 | 53/56 | 51 | 56 |