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. 2013 Sep 10;7(9):1886–1889. doi: 10.7860/JCDR/2013/6726.3342

[Table/Fig-1]:

Comparison of age and PEFR among non-smokers, cigarette smokers and cigar smokers

Non-smokers (n=64) Cigarette smokers (n=49) Cigar smokers (n=10) Significance
Age (in years) 26.42 ± 5.61 27.85 ± 5.73 35.30 ± 3.33 0.001*
PEFR (lpm) 513.43 ± 87.58 409.79 ± 90.31 288 ± 42.89 0.001*

(Values are expressed as mean + S.D.)

*indicates values which are statistically significant; lpm= litres per minute)