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Table 4 Measurements of cost

From: Study protocol of cost-effectiveness and cost-utility of a biopsychosocial multidisciplinary intervention in the evolution of non-specific sub-acute low back pain in the working population: cluster randomised trial

Measurements of costs

Type of cost

Costs for

Specification

Source of resources used

Source of costs per 'unit'

Cost calculation

Medical direct costs

Primary Health Care consultations

General Practitioner

Practice nurse

Physiotherapist

Psychologists

Self-reported and comparison the answers by E-cap (electronical clinical records e-cap)

Catalan Institute of Health provider

Number of visits Ɨ tariff

Ā 

Secondary care consultations

Other specialists

Self-reported and comparison by E-cap

Catalan Institute of Health provider

Number of visits Ɨ tariff

Ā 

diagnostic tests

Radiology, magnetic resonance, scanner, electromyogram

Self-reported and comparison by E-cap

Catalan Institute of Health provider

Tests done Ɨ tariff

Ā 

Pharmaceutical treatment

muscle relaxants, analgesics, NSAIDs, corticoids, anxiolytic, Antidepressants and gastric protectors

Self-reported and comparison by E-cap

Standard Pharmaceutical Prices by Consejo General de Colegios Oficiales de FarmacƩuticos

Medicines bought Ɨ price medicine

Ā 

Additional medical services

Traumatology, rehabilitation, neurosurgery, other therapies

Self-reported and comparison by E-cap

Catalan Institute of Health provider

Services provided Ɨ tariff

Ā 

Material provided in intervention

leaflet, booklet, CD, DVD

Provider

Provider; production costs

Number of material Ɨ price per material

Ā 

Material used in intervention

mat, postural stool, tennis ball

Provider

Provider; market price

Number of material Ɨ price per material

Non medical direct costs

Aid to patients who face disabilities

Aid in household, aid for young children

Self-reported

Patient

hours of aid Ɨ price per aid

Ā 

Additional therapies

Gymnasium, swimming, Yoga/Tai Chi/stretching, other

Self-reported

Patient

Number of months Ɨ price per month

Ā Ā 

Acupuncture, osteopathy, massage, homeopathy, other therapies

Self-reported

Patient

Number of sessions Ɨ price per session

Indirect costs

Cost of lost productivity

Absenteeism

Self-reported and comparison by E-cap

Self-reported, profession classification assigned according to Spanish National Institute of Statistics

Days of work sick leave Ɨ salary

Ā Ā 

Presenteeism

Self-reported

Self-reported, profession classification assigned according to Spanish National Institute of Statistics

reduction percentage Ɨ productivity