Table 5. Mean PEFR across different height categories.

PEFR: Peak expiratory flow rate

Height (cm) (In cm)	Frequency	Mean PEFR (L/s)	PEFR SD (L/s)
<120	55	2.38	0.63
121-130	56	2.98	0.64
131-140	58	3.79	1.54
141-150	78	4.33	1.03
151-160	48	5.29	1.09
161-170	20	6.28	1.14
171-180	1	6.75	0.12