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Table 4 Content of baseline and follow-up assessments

From: Comparison of yoga versus stretching for chronic low back pain: protocol for the Yoga Exercise Self-care (YES) trial

Measures

Baseline

6-Wk

12-Wk

26-Wk

BASELINE INFORMATION

    

Sociodemographic characteristics

x

   

Back pain history

x

   

Expectations of treatment

x

   

Knowledge of yoga and therapeutic exercises

x

   

CORE SET OF OUTCOMES FOR BACK PAIN STUDIES

    

* Roland Morris Disability Questionnaire (RDQ)(dysfunction)

x

x

x

x

* Bothersomeness of low back pain

x

x

x

x

Satisfaction with back care

x

x

x

 

Disability days

x

x

x

x

Patient global rating of improvement

 

x

x

x

TREATMENT-RELATED INFORMATION

    

Adverse experiences

 

x

x

x

Perceptions of yoga and therapeutic exercise classes, including instructors

  

x

 

Adherence to assigned treatment, including home practice

 

x

x

x

POTENTIAL CONFOUNDERS

    

Use of co-interventions: medications

x

x

x

x

Use of co-interventions: other treatments

  

x

x

Daily exercise and job-related activity

x

x

x

x

Smoking status

x

  

x

Lawsuits, workers compensation (initial exclusion)

  

x

x

Body Mass Index

x

  

x

POTENTIAL MEDIATING VARIABLES

    

Positively impacts cognitive appraisal

    

Fear avoidance

x

x

x

x

Self-efficacy

x

x

x

x

Conscious awareness of body

x

x

x

x

Positively impacts affect and stress

    

Psychological distress

x

x

x

x

Perceived stress

x

x

x

x

Positive emotions

x

x

x

x

Reduces physical impairment

    

Physical Impairment Index

x

 

x

 

Improves neuroendocrine function

    

Salivary cortisol

x

x

x

 

Salivary DHEA

x

x

x

 
  1. * Co-primary outcome measures