[Table/Fig-2]:

Comparison of Mean and SD Of PEFR in Study Subjects According to Age Groups

Group no.	Age (in yrs)	No. of subjects	Mean ± SD of PEFR (in lpm)
I	20–30	112	429.64 ± 48.65
II	31–40	104	398.65 ± 50.37
III	41–50	84	347.38 ± 37.68