Instrument for Data collection:
The questionnaires used for this study had three parts: part A, B and C.
Part A consist of the socio-demographic variables of the respondents and
the workplace factors while part B was World Health Organization Quality
of Life questionnaire (WHOQOL BREF) with 26 items and Part C was the
Standard Nordic Musculoskeletal questionnaire used to assess the rate of
work related musculoskeletal disorders. The Nordic Musculoskeletal
question was scored 1 for yes and 0 for no. It is used to assess the
disorders of the musculoskeletal system within 12 months duration. It
has questions on the nine parts of the body that are commonly affected
by WRMSDs. This questionnaire has been tested for reliability by the
developers through test retest method with a good Cronbach’s alpha value
of 0.78, 0.91 and 1.00 across the times. The WHOQOL questionnaire was
developed by WHO in 1995 to assess the effect of workers’ work on their
quality of life and impacts of disease on the workers life. It was
developed based on the perception of the individual about their quality
of life in different domains. It was designed for transcultural uses and
in clinical and research studies.
The quality of life questionnaire has five likert scale items that were
scored using
“1”= very dissatisfied, “2”= dissatisfied, “3”=neither
dissatisfied nor satisfied, “4”=satisfied, “5”= very satisfied. To
further determine the predictors of quality of life among the quarry
workers using multiple logistic regression, the researcher had
categorized the quality of life from four domains into two domains
(Dissatisfied/poor Qol and satisfied/good Qol). This categorization was
made based on the workers responses to one of the questions, which seeks
to determine the overall level of the workers’ quality of life. The
reliability of WHOQOL questionnaire has been established with a Cronbach
alpha value of 0.7 and 0.8 across studies [27, 28].