research protocol 05.03.11

8/7/2019 Research Protocol 05.03.11

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Dr. Mithila FaruqueDepartment

of

Occupational & Environmental Health

Roll. 17, Session : 2010-11


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TITLE

Prevalence of Respiratory symptoms and

assessment of lung function status of the

cotton industry workers in a selected area


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Historically cotton industry has got its predominanceand heritages in Bangladesh. The level of artistry and

intricacy achieved in cotton fabrics are unparallel and

unique. It can meet every need from exquisite fabrics of

daily use. The industry has displayed innate resilience to

withstand and adopt itself to the changing demand of

modern times.

Though cotton industry of Bangladesh has suffered from

a major recession till the late 1990s, efficientlyproduced and export quality cotton fabrics are now one

of the major contributor to the national economy.

Needless to mention that this is solely depends on the

working health of the workers.


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Air pollution is a major occupational problem invarious industries and occupational lung disease is

recorded in accounts of ancient history (1-3). Textile

cotton workers are at risk for occupational lung

disease, including Byssinosis(chest tightness,coughand shortness of breath) and chronic Bronchitis

which is primarily associated with exposure to

cotton dust. The earliest steps of textile processing

release a greater deal of dust in the air, and long-

term exposure can leave mill workers with

respiratory disorders (6).


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Symptoms are usually more pronounced whenreturning to work after a weekend, holiday or

vacation and subside as the worker becomes re-

accustomed to the environment(8). Documented

prevalences of byssinosis were 8% in China, 30% inIndonesia, 37% in Sudan, and up to 50% in India(4).

In a study of Ethiopia it was found that the overall

prevalence of byssinosis is highest in carding

(57.9%) and in ring frames (57.1%) operatives,while the lowest in the weaving preparatory section.

But there is no such study in Bangladesh.


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It is a common problem but so far most neglected issuein our country. In general, information is lacking

concerning the health effect of cotton dust exposure and

its control strategies among textile workers. This study

is intended to explore the dimensions of the byssinosis

and other respiratory problems in a cotton textile factory

in order to provide useful information for any possible

cotton dust control strategies. The factory owners should

be concerned about the occupational safety & health

problems of the workers specially the lung diseases due

to cotton dust exposure. So this study is justifiable on

the context to create awareness among the stakeholders

and to occupationally notify all to ensure optimum

health for the workers.


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What proportion of the cotton textile workers

(selected groups) have the respiratorysymptoms.

What is the lung function status of the

workers.


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To determine the prevalence of and factors

associated with respiratory symptoms amongworkers and to measure the lung function

status of the workers in a cotton textile

factory.


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To find out the prevalence of respiratory symptoms

among the workers.

To compare the lung function status of the workers

associated with their occupational status by

duration and type of work.

To uncover the relationship between exposure tocotton dust and respiratory impairments.

To determine the socio-demographic characteristics

of the respondents.


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Age: age is taken as stated by the respondentsin complete years

Socio-economic status: in this study all

samples are taken from poor socio-economicgroup working in the same factory

Nutritional status of the workers: is

measured by body mass index (BMI) i.e.

weight in kg/height in m2

Work type: samples are taken from the

workers doing 3 different type of works

weaving, carding and spinning


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Study design:

Cross sectional study

Study period:From January to June 2011

Place of the Study:

Will be conducted at Tarabo upazilla ofRupganj,Narayanganj


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Study Population:

Workers ofcotton textile industry operating

in the areas of weaving, carding and spinning

involved in the direct processing of cotton

materials, who have been working for at least

one year


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n = z21-/2 pq/d2

= 1.962 x (0.5x0.5)/0.052

= 3.8416 x 100= 384

[z = 1.96, d = .05, p = 50% = 0.5, q = (1-p)= 0.5]

A sample size of 384 would be needed


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SamplingTechnique:

-Simple random sampling

Since the working sections hadheterogeneous dust concentrations, thestudy population was divided intohomogenous, mutually exclusive

groups/strata. Then independent sampleswere selected from each working sectionaccording to their sizes as ascertainedfrom rosters.


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Data collection technique:

- Interview- Lung function assessment (Forced expiratoryvolume in 1 sec (FEV1), forced vital capacity(FVC) and FEV1/FVC ratio will be measured

using portable medical spirometer.

Data Collection Tool:

Data will be collected using

-Questionnaire (Researcher administered closetype of questionnaire)

-Checklist containing height, weight,spirometric findings


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Data presentation

- Data will be presented by tables & graphs

- Data collected are of qualitative &

quantitative type.

Quantitative data will be analyzed to find out

the mean & standard deviation & will be

tested by Students t test.

Qualitative data will be used to measure the

proportion and will be tested by G2 test

& other advanced statistical technique as

required.


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THANK YOU

research protocol 05.03.11

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