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. 2016 Jun 3;2016(6):CD009873. doi: 10.1002/14651858.CD009873.pub3

Wang 2015.

Methods Study design: RCT
Country: Taiwan
Total number: 80
Participants Population: people with malignant ascites from gastroenterology and oncology units,
aged ≥ 18 years; clinically diagnosed stage Ⅳ cancer; clinically diagnosed malignant ascites; able to speak Mandarin or Taiwanese; obtained medical clearance from an attending physician to participate in the study; consent to participate, which was witnessed by a family member
Setting: medical centre in northern Taiwan
Mean age: 59.1 years
Interventions Intervention: 15‐minute gentle abdominal massage, using straight rubbing, point rubbing, and kneading, administered twice daily for 3 days
Comparison: twice‐daily 15‐minute social interaction contact with the same nurse
Country of training: not described
Years in practice: 8 hours (nurse practitioner)
Outcomes Outcome measures at baseline and then follow‐up measurement after: in the morning for 4 consecutive days from pre‐ to post‐test
  • Body weight

  • Symptoms: Edmonton Symptom Assessment System‐Ascites Modification (ESAS:AM)

Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Quote: "randomly assigned using random allocation software. However, participants at the same room were assigned to the same study group to avoid interactions between the intervention and control group"
Allocation concealment (selection bias) Unclear risk Used random allocation software. However, participants at the same room assigned to the same study group to avoid interactions between the intervention and control group
Blinding of outcome assessment (detection bias) 
 All outcomes Low risk Performed the same outcome assessment in both groups
Quote: "A blinded outcome assessor measured body weight and collected self‐report data on malignant ascites symptoms from both groups each morning before breakfast (between 7 and 8 a.m.) over the 4 consecutive days from pre‐ to post‐test"
Incomplete outcome data (attrition bias) 
 All outcomes Low risk Quote: "all 80 participants completed the study"
Selective reporting (reporting bias) Low risk Quote: "the Edmonton Symptom Assessment System‐Ascites Modification (ESAS:AM) (Easson et al., 2007) was used to measure the severity of malignant ascites symptoms. The ESAS:AM has 11 items, each of which targets a specific ascites‐associated symptom. The participants were asked to indicate the severity of each symptom during the preceding 24 hours using an 11‐point (0 ‐ 10) numeric rating scale (NRS)"
Size Unclear risk n = 80
Other bias Unclear risk Level of nausea was different at the baseline between groups (P value = 0.041)