This study was intended to compare pulmonary function parameters in tea garden factory workers who are on chronic exposure to tea dust with tea garden plantation workers on the basis of dynamic ventilatory pulmonary function tests. The pulmonary function tests done on 128 subjects included 64 tea garden factory workers and 64 tea garden plantation workers. In tea factory workers the values of vital capacity (VC), forced vital capacity (FVC), forced expiratory volume in one second (FEV1), forced expiratory volume in first 0.75 second (FEV0.75), FEV1/FVC%, peak expiratory flow rate (PEFR) were found significantly lower (p < 0.001) than those of tea garden plantation workers. It may be concluded that pulmonary functions are more affected in tea factory workers than those of tea plantation workers.
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