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Table 2 Jadad score and Newcastle-Ottawa quality assessment scale

From: Efficacy of transanal tube placement after anterior resection for rectal cancer: a systematic review and meta-analysis

Study Jadad score (0–5) Newcastle-Ottawa quality assessment scale cohort studies
   Selection (0–4) Comparability (0–2) Outcome (0–3) Total (0–9)
Xiao et al. [19] 2 **** ** *** 9
Nishigori et al. [20] **** * *** 8
Hidaka et al. [21] **** * *** 8
Zhao et al. [22] **** ** *** 9
  1. There is one star for each point, a study can be given a maximum of nine stars