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Table 2 Schedule of enrollment, interventions, and assessments

From: Impact and cost-effectiveness evaluation of a community-based rehabilitation intervention on quality of life among Chinese adults with hearing loss: study protocol for a randomized controlled trial

Timepoint

Study period

Enrollment −T1

−30 to −1 day

Allocation T0

day 0

Post-allocation T1

12 months

Close-out T2

20 months

T a

C b

T a

C b

T a

C b

T a

C b

Enrollment

 Eligibility screen

×

×

      

 Informed consent

×

×

      

 Allocation

  

×

×

    

Intervention

  

×

 

×

 

×

 

Assessments

 Socio-demographic data

×

×

×

×

  

×

×

 Hearing outcome

  Pure tone audiometry

  

×

×

  

×

×

  HHIE-S score

  

×

×

  

×

×

  Self-reported hearing

  

×

×

  

×

×

  IOI-HA score

    

×

 

×

 

 Quality of life (primary outcome)

  SF-12 score

  

×

×

  

×

×

  EQ-5D score

  

×

×

  

×

×

 Secondary outcomes

  Sub-dimension of SF-12

  

×

×

  

×

×

  Sub-dimension of EQ-5D

  

×

×

  

×

×

  Physical functioning (ADLs)

  

×

×

  

×

×

  Physical functioning (IADLs)

  

×

×

  

×

×

  Chronic diseases

  

×

×

  

×

×

  Cognitive function (MMSE)

  

×

×

  

×

×

  Depression (CES-D)

  

×

×

  

×

×

  Social support (LSNS)

  

×

×

  

×

×

  Hospitalizations

  

×

×

  

×

×

  Falls

  

×

×

  

×

×

  Medical costs

  

×

×

  

×

×

  Loss of productivity

  

×

×

  

×

×

  1. Abbreviations: T, treatment group; C, control group; HHIE-S, Hearing Handicap for the Elderly-Screening Version; IOI-HA, The International Outcome Inventory for Hearing Aids; SF-12, Short Form 12 Health Survey; EQ-5D, EuroQoL 5-Dimension; ADLs, activities of daily living; IADLS, instrumental activities of daily living; MMSE, Mini-Mental State Examination; CES-D, Center for Epidemiologic Studies-Depression; LSNS, Lubben Social Network Scale