Table 2.

Peak expiratory flow rate (PEFR) of rice mill workers

Age group (years)	No. of workers	PEFR in l/min
		<200	250–300	300–350	350–400	>450
15–25	20	—	—	14	4	2
26–35	32	2	5	19	6	—
36–45 and above	23	6	7	7	3	—