Page 30 - MOH Supply and Needs-Based Requirement Hyperlink 02032021

EXTENDED EXECUTIVE SUMMARY 22

Figure 8: The Stock and Flow Diagram for doctor supply.

SFD - Stock and Flow

New doctors rate
(overseas grads)

New doctors
New doctors rate (overseas grads)
(local grads)
Attrition rate

Registered
Doctors
New doctors Attrition
(local grads)

The SFD in Figure 8, can be created directly using Vensim software, one of the SD software
tools available in the market. In SFD (as well as in Vensim) the box represents the stock (level),
the double arrows (the arrow with valve/regulator symbol) represent the flows (resource or
material). Single arrows represent information links (or information flows). The cloud-like
symbols to the left of the New Doctors flow and the right of the Attrition flow are the source
and the sink, respectively. The source and the sink mark the boundary of the system.
In this project, various Programs and Divisions from the Ministry of Health including
Planning Division, Institute Health System Research, and experts in SD modelling from
public universities, were together developing the system dynamic models based on
the modelling framework given in Figure 5. The models were to be used to provide the
supply and requirement projections of five selected professions, namely Doctors, Dentists,
Pharmacists, Nurses, and Assistant Medical Officers.

SUPPLY AND NEEDS-BASED REQUIREMENT PROJECTIONS OF MALAYSIAN HUMAN
RESOURCES FOR HEALTH USING SYSTEM DYNAMICS APPROACH 2016 - 2030