We used a combination of ABC and XYZ analysis to identify
information about resources (material and human) used in hospitals during the
COVID-19 pandemic (Certificate registered in IREG #2083517). In this case,
ABC-analysis is considered as the ratio of quantity and result, and
XYZ-analysis as the ratio of quantity and structure of consumption. The
parameters of ABC - analysis were determined according to the degree of
importance of the contribution of personnel to achieve the goal - the medical
result: A - high 80% and above, B - average 40% - 80%, C - low 40% and lower
significance of the contribution for the main production of goods or services.
Table 1: Design matrix template.
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A 80% or more
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B 40-80%
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C from 40%
or less
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X 80% or more
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Y 40-80%
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Z 40% or less
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The contribution is
calculated as: B = T x Kn x Kw, where T is the ratio of the actual rate / hour, Kn is the coefficient of irreplaceability
(work cannot or can be performed by others Kn = 100% irreplaceable, Kn = 50% partially replaceable, Kn = 25% are completely replaceable), ?w - time coefficient (works can be postponed ?w = 1 cannot be postponed, ?w = 0.5 can be postponed
for a day, ?w = 0.25 can be postponed for more than a day). Parameters of XYZ - analysis: the degree of
participation of the department, laboratory in the general
process of treatment
and diagnostic measures: X - 80 % or more, Y - 40% - 80%, Z
- 40% or less. The degree of
participation is calculated as: Y = Cch x Kp
where Cch is the share of the department among all departments in the patient's
recovery process, Kp is the coefficient of constancy (need for services), ?p = 100% - constantly
when the patient is in the hospital, ?p = 50% according to the
degree of development of the disease,
?p = 25% when a patient calls for help.
We have created a calculation matrix: Combinations AX, AY, AZ, BX, BY, BZ, CX, CY, and CZ form a calculation matrix (Table 1).
Table 2: Template of the calculation matrix.
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A 80% or more
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B 40-80%
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C from 40%
or less
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X 80% or more
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Department of General
Medicine
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Y 40-80%
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Department of Clinical Analysis
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Z 40% or less
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Intensive care unit
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Department of physiotherapy
exercises
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Combinations of CY, CZ, and BZ have low contribution
significance and low degree of participation. Combinations of BY and CX have
medium degree of participation and medium contribution significance.
Combinations AX, AY, AZ, BX have a high contribution value and a high degree of
participation. An example of calculation using the ABC - and XYZ-analysis
matrix. Intensive care unit (doctor) V = 1x100% x1 = 100%, Q = 0.5x50% = 25%;
Department of general therapy (doctor) V = 1x100% x0.5 = 50%, Q = 1x100% =
100%; Department of physiotherapy exercises (doctor) V = 0.5x50% x0.25 = 6%, Q
= 1x25% = 25%; Department of clinical analyzes (doctor) V = 1x50% x1 = 50%, Q =
0.5x100% = 50% (Table 2).