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Table 1 Description of model variables

From: Modeling patient access to therapeutic oxytocin in Zanzibar, Tanzania

Variable Name

Type

Description

Inflow of Drugs – Supply Chain from manufacturer to end-user

 Size of Shipment

DV

Weight or freight size of the shipment

 Frequency of Shipment

DV

Number of times a shipment occurs within a given period of time

 Baseline Cost Prior of Oxytocin Dose

DV

Aggregate cost of standard oxytocin dose

Availability at Facility - Review of depreciation in drug quality

 Quality Depreciation due to Environment (ambient temperature)

DV

Extent of loss in drug quality due to ambient temperature conditions

 Natural Rate of Quality Decay

IV

Half-life of drug

Accessibility - Patient Access – describes the patient’s access to health facilities.

 Travel time to health facility

IV

Distance to health center that suits patient’s needs

 Literacy

IV

School completion by patient or caregiver

 Wealth Quintile

DV

Patient’s access to funds

 Patient Access to Health Facility

DV

Fraction of percent of patients able to access adequate health facilities from those who need it.

  1. Output - The weekly access ratio is the ratio of the number of effective doses of quality oxytocin available in a given week divided by the demand for oxytocin that must remain available until the next shipment arrives. A weekly access ratio of 1 would indicate oxytocin supply perfectly matched with the current weekly demand