INTERNATIONAL JOURNAL OF RESEARCH AND INNOVATION IN SOCIAL SCIENCE (IJRISS)
ISSN No. 2454-6186 | DOI: 10.47772/IJRISS | Volume IX Issue X October 2025
Synthesis of Results
Due to substantial methodological heterogeneity across the included studies particularly differences in study
design, population characteristics, measurement tools, and types of outcomes assessed, a quantitative meta-
analysis was not appropriate. Instead, the review employed a narrative thematic synthesis, which allowed for the
integration of diverse forms of evidence while maintaining conceptual coherence.
The synthesis process involved repeated reading, coding, and categorisation of extracted data, followed by
clustering of similar findings into broader conceptual themes. Four major themes were developed through this
iterative process. The first theme, Epidemiology, encompassed trends in prevalence, types of injuries, and
patterns of exposure across clinical departments and countries. The second theme, Risk Factors, captured both
individual-level determinants such as experience, behaviour, or fatigue and organisational influences such as
workload, availability of sharps containers, and OSH system strength. The third theme, Knowledge, Attitudes,
Practices, and Reporting, examined behavioural competence, perceived barriers, reporting culture, and
adherence to follow-up procedures. The fourth theme, OSH Prevention Practices, synthesised recommendations
and interventions at institutional and system levels, including engineering controls, training initiatives, and
policy frameworks.
Quality Assessment and Risk of Bias
Although a formal risk-of-bias tool such as the Joanna Briggs Institute (JBI) checklist or the Newcastle-Ottawa
Scale was not systematically applied, the review incorporated a descriptive assessment of methodological quality
to support critical interpretation of findings. The evaluation focused on several key indicators, including the
appropriateness of sampling methods, representativeness of the sample, and the clarity of outcome definitions
for NSIs. Studies that clearly described inclusion criteria, operational definitions, and data collection processes
were considered more methodologically robust.
Response rates and completeness of reporting were also noted, as studies with low response rates or incomplete
data may be more susceptible to bias. In addition, reviewers assessed whether the studies acknowledged and
addressed limitations, which enhances transparency and helps contextualise findings.
Common risks of bias identified across the included studies included recall bias, particularly in self-reported
surveys where participants were asked to remember past NSI events. Under-reporting was another major
concern, as several studies relied on voluntary reporting systems known to underestimate true NSI incidence.
Furthermore, heavy reliance on self-report measures posed risks of social desirability bias and misclassification.
These methodological considerations were incorporated into the interpretation of results, ensuring that
conclusions were grounded in a balanced appraisal of the strengths and limitations of the underlying evidence.
RESULTS
Characteristics of Included Studies
A total of 15 studies were included in this review, representing diverse geographical regions including Malaysia,
Iran, Pakistan, South Korea, Somalia, Iraq, Switzerland, and Saudi Arabia. Most of the studies adopted a cross-
sectional design, while two were reviews and one was a meta-analysis. Sample sizes varied considerably across
studies, ranging from fewer than 100 participants to more than 1,000 healthcare workers, although nurses
consistently formed the primary population of interest. Several studies also involved mixed groups such as
medical students, dental personnel, or other allied health workers, but were included when the outcomes were
directly relevant to nursing practice or sharps-handling safety. Across the body of evidence, the studies measured
key outcomes including the prevalence of needlestick and sharps injuries, associated individual and
organisational risk factors, knowledge and awareness levels, attitudes and practices, reporting behaviour, and
adherence to post-exposure follow-up procedures. Although methodological quality varied, most studies clearly
described their data collection processes and provided statistically analysable findings suitable for synthesis.
However, reliance on self-reported survey data was common, suggesting an inherent risk of recall and social
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