Establishment of Reference Norms for Lung Function Parameters of Healthy Sri Lankan Tamils

Table 2

Mean ± SD of lung function parameters of males in each age group.

Age group	VC (L)	FVC (L)	FEV1 (L)	FEV1%	FEF 25–75 (L/S)	MEF75 (L/S)	MEF50 (L/S)	MEF25 (L/S)	PEFR (L/min)
14	2.61 ± 0.51	2.68 ± 0.53	2.35 ± 0.46	88.56 ± 4.15	2.85 ± 0.59	4.79 ± 0.98	3.26 ± 0.69	1.52 ± 0.36	327.01 ± 62.15
15	3.17 ± 0.57	3.28 ± 0.59	2.92 ± 0.5	87.78 ± 4.19	3.35 ± 0.91	5.85 ± 1.22	3.80 ± 1.05	1.83 ± 0.63	377.5 ± 68.63
16	3.48 ± 0.62	3.60 ± 0.6	3.18 ± 0.51	88.97 ± 5.76	3.85 ± 0.94	6.49 ± 1.25	4.26 ± 1.07	2.13 ± 0.68	419.56 ± 62.13
17	3.59 ± 0.49	3.72 ± 0.50	3.29 ± 0.41	88.77 ± 5.56	4.00 ± 0.84	6.77 ± 1.32	4.58 ± 0.96	2.13 ± 0.5	429.64 ± 64.69
18	3.64 ± 0.52	3.80 ± 0.56	3.23 ± 0.48	86.17 ± 6.17	3.69 ± 0.86	6.54 ± 1.56	4.23 ± 1.03	1.92 ± 0.49	445.6 ± 65.57
19	3.91 ± 0.66	4.10 ± 0.65	3.54 ± 0.54	87.17 ± 5.2	4.02 ± 0.85	6.84 ± 1.23	4.59 ± 1.05	2.16 ± 0.54	454.26 ± 65.89
20	3.65 ± 0.52	3.86 ± 0.58	3.45 ± 0.52	89.47 ± 5.20	4.27 ± 0.97	7.40 ± 1.29	4.82 ± 1.07	2.34 ± 0.67	469.58 ± 60.24
21–25	3.72 ± 0.58	3.88 ± 0.55	3.30 ± 0.48	85.03 ± 5.6	3.57 ± 0.89	6.57 ± 1.45	4.09 ± 1.08	1.83 ± 0.48	446.84 ± 73.92
26–30	3.69 ± 0.51	3.82 ± 0.49	3.26 ± 0.40	85.20 ± 4.07	3.61 ± 0.70	7.14 ± 1.41	4.24 ± 0.88	1.71 ± 0.37	480.81 ± 76.03
31–35	3.57 ± 0.55	3.70 ± 0.56	3.15 ± 0.48	85.09 ± 4.36	3.59 ± 0.88	7.18 ± 1.48	4.26 ± 1.14	1.66 ± 0.42	476.33 ± 60.19
36–40	3.43 ± 0.53	3.5 ± 0.54	3.02 ± 0.44	86.354 ± 4.48	3.66 ± 0.81	7.16 ± 1.47	4.39 ± 1.07	1.67 ± 0.38	467.1 ± 66.0
41–45	3.47 ± 0.55	3.54 ± 0.55	2.99 ± 0.43	84.56 ± 5.26	3.47 ± 0.94	7.09 ± 1.58	4.15 ± 1.12	1.58 ± 0.50	481.04 ± 67.32
46–50	3.19 ± 0.52	3.24 ± 0.52	2.75 ± 0.46	84.8 ± 4.59	3.2 ± 0.83	6.39 ± 1.39	3.90 ± 1.05	1.46 ± 0.42	449.33 ± 79.44
51–55	3.11 ± 0.59	3.17 ± 0.58	2.67 ± 0.50	84.22 ± 5.29	3.05 ± 0.86	6.32 ± 1.64	3.68 ± 1.23	1.38 ± 0.44	448.57 ± 78.44
56–60	3.05 ± 0.69	3.08 ± 0.68	2.56 ± 0.57	83.46 ± 5.76	2.86 ± 0.99	5.96 ± 1.76	3.52 ± 1.23	1.29 ± 0.47	438.18 ± 106.69
>60	2.62 ± 0.71	2.63 ± 0.73	2.15 ± 0.56	82.65 ± 5.95	2.30 ± 0.72	5.07 ± 1.42	2.91 ± 0.90	0.99 ± 0.38	367.14 ± 75.10