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. 2010 Jan 20;2010(1):CD003974. doi: 10.1002/14651858.CD003974.pub3

Dibble 2007.

Methods Design: three group parallel trial 
 Purpose: study the effect of acupressure on chemo‐therapy induced nausea
Participants Patients: cancer patients receiving chemotherapy 
 Baseline comparability: yes
Interventions Placebo: needling in S13 point theoretically inert for nausea 
 Untreated: no needling 
 Experimental: needling in P6 
 (Co‐intervention: antiemetic drugs)
Outcomes Nausea intensity (NRS) 
 Rhodes Index of Nausea (3 items) 
 Rhodes index of nausea and vomiting (1 item) 
 Functional status (NRS) 
 State‐Trait Anxiety Inventory
Notes Data provided from authors: mean nausea NRS (0 to 10) evening after getting chemotherapy.
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? Unclear risk NS
Allocation concealment? Unclear risk NS
Blinding? 
 Treatment provider Low risk 'The researchers endeavoured to keep the research assistant masked as to the active point'
Blinding? 
 Outcome assessor Unclear risk Not relevant as patient reported outcome
Incomplete outcome data addressed? 
 All outcomes Low risk Drop‐out < 15%
Free of selective reporting? High risk No protocol available. Data provided from authors
Free of other bias? Low risk  
No signs of variance inequality or skewness? High risk Either variance inequality (F‐test statistically significant) or skewness (1.64 standard deviations exceeds the mean)
Trial size > 49? Low risk N = 100
Clearly concealed allocation + trial size > 49 + drop‐out max 15% High risk Allocation not clearly concealed