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

Parker 1995.

Methods Design: three group parallel trial 
 Purpose: examine the effect of stress management on clinical outcomes of rheumatoid arthritis (RA)
Participants Patients: out‐patients with RA 
 Baseline comparability: yes
Interventions Placebo: sessions where a education programme was discussed with each patient 
 Untreated: no sessions 
 Experimental: sessions with stress management 
 (Co‐intervention: standard RA treatment, 74% of patients in placebo and 77% in untreated group continued on stable medication).
Outcomes Pain (VAS) 
 McGill Pain Questionnaire 
 Hassles scale 
 Daily Stress Inventory 
 Arthritis Helplessness Index 
 Center for Epidemiologic Studies Depression Scale 
 State‐Trait Anxiety inventory 
 Arthritis Self‐Efficacy Scale 
 Coping Strategy Questionnaire 
 Arthritis impact Measurement Scale 
 Disease Activity
Notes Relevant outcome data not accessible in trial report but retrieved by contact with authors.
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? Unclear risk NS
Allocation concealment? Unclear risk NS
Blinding? 
 Treatment provider High risk Not described as double‐blind (placebo/stress‐management)
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 Relevant outcome data not accessible in trial report but retrieved by contact with 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 = 94
Clearly concealed allocation + trial size > 49 + drop‐out max 15% High risk Allocation not clearly concealed