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Table 2 Quality assessment for before-after (pre-post) studies with no control group

From: Effect of physical activity and exercise on endometriosis-associated symptoms: a systematic review

References Question or objective stated Eligible criteria pre-specified and described Participants representative of clinical population All eligible participants enrolled Sample size sufficient Intervention clearly described/delivered consistently Outcomes prespecified /valid and reliable, and consistently implemented Blinded assessors
Friggi Sebe Petrelluzzi et al. [25] Yes Yes Yes Yes CD Yes Yes NA
Awad et al. [26] Yes Yes No No CD Yes Yes NA
References Dropout rate ≤ 20% or accounted for in the analysis Statistics well described Outcomes tested multiple times Analysis of individual-level data Confounding variables measured and adjusted Exposure/risk defined/valid and reliable, and implemented consistently Quality rating (poor/fair/good)
Friggi Sebe Petrelluzzi et al. [25] Yes Yes no NA No Yes Poor
Awad et al. [26] Yes Yes No NA No No Poor*
  1. CD could not determine. Items “confounding variables measured and adjusted” and “exposure/risk defined/valid and reliable, and implemented consistently” was added to the original assessment form. *This study was excluded from the qualitative synthesis due to fatal flaws in its design