Risk of Dehydration among Construction Workers in Relation to Job Task and Personal Risk Factors

Christopher Edet Ekpenyong


Recent data indicate that personal risk factors and job tasks of construction workers may be more important factors in determining their overall hydration status. However, the influence of these factors on worker hydration status has not been adequately explored. This formed the focus of the present study.

A cross-sectional study of 208 male workers aged 18 to 60 years from 2 construction companies in Southern Nigeria was undertaken. Three survey instruments were used to assess the workers, who were classified into 2 groups: hydrated (106) and dehydrated (102). Dehydrated participants were sub-classified into 3 groups based on employment status, job task, and job skill. Parameters measured were socio-demographics, anthropometrics, urinary specific gravity, and group-specific odds for dehydration.

Pre- and post-shift dehydration status was 49% and 50.9%, respectively. Personal risk factors found to significantly (P<0.05) affect hydration status were socioeconomic status, smoking, alcohol consumption, employment status, physical activity, and marital status. Clinical dehydration was more common among unskilled workers in the heavy task group. Age, obesity, and current alcohol intake were associated with increased risk of dehydration in the light task group. Smoking, physical activity, and temporary employment increased the odds for dehydration irrespective of job task.

Personal risk factors play a significant role in determining workers overall hydration status.  Intervention programs should include both environmental and non-environmental risk factors to achieve a complete success.


Keywords: Hydration status, construction, non-environmental risk factors.


Hydration status, construction, non-environmental risk factors.

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