Page 18 - MALAYSIAN BURDEN OF DISEASE AND INJURY STUDY, 2015-2017

2.3.2 Each disease consists of a conceptual model of health loss
Severity which depicts the major sources of health loss caused by
Distribution and different severity levels and stages of a disease. In most
Disability Weights cases, the major sources of health loss, also called the
sequelae, were based on GBD 2013.

The disability weight (DW) for each sequela was obtained
from the GBD 2013 (Salomon et al., 2015). Where necessary
or limited by data availability, composite and/or combined
disability weights (CDW) were used based on disability
weights for 235 unique health states in the Global Burden
of Disease 2013 study. CDW were calculated according to the
following formula:

CDW = 1- ( S (1 — DWx) Ly )

Where,
x: The sequence of disability weights in Global Burden of
Disease
y: The sequence multiplied for every sequence listed

2.3.3 Years Lost due to Disability (YLD) was calculated based on
YLD this two-formula depending on data sources obtain:
calculations
If the data source obtains had incidence and duration period;

YLD(c,s,a,t) = I(c,s,a,t) x DW(c,s,a) x L(c,s,a,t)

Where:
P(c,s,a,t) = number of prevalence for cause; c, age; a, and
gender; s, in year; t
DW (c,s,a) = disability weight for cause; c, age; a and gender;
s
L(c,s,a,t) = average duration of the case until remission or
death (years)

If the data only had prevalence;

YLD(c,s,a,t) = P(c,s,a,t) x DW(c,s,a)

P(c,s,a,t) = number of incident cases for cause; c, age; a,
and gender; s
DW (c,s,a) = disability weight for cause; c, age; a and gender;
s

8 Malaysian Burden Of Disease And Injury Study 2015-2017
CENTRE FOR BURDEN OF DISEASE RESEARCH, INSTITUTE FOR PUBLIC HEALTH