Table 2 Overview of cost measures
Type of cost | Level | Expense type | Cost component | Means of collection | Timing of collection | Source of data |
|---|---|---|---|---|---|---|
Direct | Intervention | Fixed cost | Software development | Trial records | After completion of software development | Developers of software: DS-EHR |
Fixed cost | Training of physicians and care coordinators | Trial records | After completion of training | Trial Team | ||
Fixed cost | Laptop | Trial records | Baseline (at the start of the trial) | Trial records | ||
Fixed cost | Mobile phone | Trial records | Baseline (at the start of the trial) | Trial records | ||
Variable cost | Care coordinator’s salary | Trial records | Monthly | Payment invoice | ||
Variable cost | Three-monthly laboratory tests | Interview with patients | Annual | Self-reported by patient | ||
Variable cost | Internet | Trial records | Annual | Payment invoice | ||
Variable cost | Communication cost | Trial records | Annual | Payment invoice | ||
Fixed cost | Software maintenance | Trial records | Annual | Payment invoice | ||
Clinic/Hospital | Variable cost | Physician’s time | Interview with patients and physicians | Annual | Self-reported by physicians | |
Variable cost | Resource use for patient management: telephone calls, letters, team meetings | Interview with physicians and hospital administrators | Annual | Self-reported by administrators | ||
Patient | Variable cost | Medications | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | |
Variable cost | Medical supplies (glucose strips, gauze, sterile solution, etc.) | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Laboratory tests | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Diagnostics | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Preventative screening (ECG, eye exam, foot exam, dental exam, etc.) | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Outpatient visits (consultation fee) | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Transportation | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Food (personal) | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Additional cost for escort | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Other out of pocket expenses | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | In-patient hospitalization | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Procedures | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Indirect | Patient | Variable cost | Lost-productivity | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF |
Variable cost | Work days lost due to out-patient visit | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | Work days lost due to in-patient hospitalization | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | loss of concentration | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF | ||
Variable cost | loss of function (health utility index) | Interview with patients + Trial eCRF | Annual | Self-reported by patient in eCRF |