| Sumario: | Introduction: Non-communicable diseases (NCDs) are currently the leading cause of mortality in Indonesia, particularly impacting the industrial workforce. Although the government provides the Integrated Health Service Post (IHSP) for NCDs as an early detection service, its utilization rate is low. This study aimed to analyze the influence of self-efficacy and social support (from family, IHSP cadres, health workers, and peers) on the use of IHSP NCD services among industrial workers. Methods: This quantitative study employed a cross-sectional design involving 1200 industrial workers across 4 provinces in Indonesia. Participants were selected using stratified random sampling. Data were collected through a structured questionnaire and analyzed using partial least squares structural equation modeling (PLS-SEM). Results: The findings revealed a low utilization rate of IHSP services, with only 40% of respondents participating. Hypothesis analysis showed that self-efficacy was the only significant predictor of service utilization (β =.385; P <.001). Conversely, social support variables, including family, cadre, health worker, and peer support, were found to have no statistically significant influence. Discussion: Self-efficacy is the dominant factor driving the utilization of NCD early detection services among industrial workers, surpassing the role of social support. Therefore, workplace health interventions should prioritize programs that build individuals' confidence and their ability to manage their health.
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