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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