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Table 1 Schedule of study procedures. This chart shows all possible visits for each cohort and assessments that would be expected to take place for each participant in each cohort. Visits marked with * may not take place for all participants

From: Protocol for understanding acute sarcopenia: a cohort study to characterise changes in muscle quantity and physical function in older adults following hospitalisation

Visit

Elective cohort

Emergency cohort

Medical cohort

A

B

C

D

A*

B

C

D

B

C

D

Demographics, observations, medications, medical history, blood tests as part of routine care

✓

✓

✓

 

✓

✓

✓

 

✓

✓

✓

Review of CT scans performed as part of routine clinical care (if available)

✓

   

✓

      

BATT using ultrasound

✓

✓

✓

✓

✓

✓

✓

✓

✓

✓

✓

BIA

✓

✓

✓

✓

✓

✓

✓

✓

✓

✓

✓

Handgrip strength

✓

✓

✓

✓

✓

✓

✓

✓

✓

✓

✓

Short Physical Performance Battery

✓

  

✓

   

✓

✓

✓

✓

Gait speed alone

  

✓

   

✓

    

Physical function by PROMIS

✓

 

✓

✓

✓

 

✓

✓

✓

✓

✓

Katz ADLs and Lawton IADLs

✓

 

✓

✓

✓

 

✓

✓

✓

✓

✓

Mini Nutritional Assessment (Full)

✓

  

✓

✓

  

✓

✓

 

✓

Extra frailty assessments

✓

 

✓

✓

✓

 

✓

✓

✓

✓

✓

Venepuncture (optional)

✓

✓

  

✓

✓

  

✓

  

Application of physical activity recorder (optional)

 

✓

   

✓

  

✓

  

Delirium assessment

 

✓

✓

 

✓

✓

✓

 

✓

✓

 

Fluid balance assessment

 

✓

✓

 

✓

✓

✓

 

✓

✓

 

Participant feedback

   

✓

   

✓

  

✓

  1. PROMIS Patient Reported Outcome Measures Information System, ADLs Activities of Daily Living.
  2. Visit A: Preoperative assessment; in preoperative assessment clinic for elective cohort, on ward prior to surgery for emergency surgery cohort (where possible) – not applicable to medical cohort.
  3. Visit B: Immediate; Within 48 h of surgery for surgical cohorts, within 48 h of admission for medical cohort.
  4. Visit C: One week; 7 (+/− 2) days after surgery (surgical cohorts) or after admission (medical cohort).
  5. Visit D: Three months; 13 (+/− 1) week after surgery (surgical cohorts) or admission (medical cohort).