Table 2

Results of maximal expiratory flow/volume (MEFV) parameters and coefficient of variation (CV%) of the three repeated measurements with and without the use of a computer-animation program during the test

	With use of program		Without use of program		p‐value^#	p‐value^¶
	mean±sd	CV%	mean±sd	CV%	p‐value^#	p‐value^¶
Inexperienced children
4–5 yrs⁺
FVC L	1.24±0.33	6.20	1.27±0.30	6.30	0.17	0.92
FEV₁ L	1.16±0.29	5.33	1.16±0.28	4.93	0.89	0.63
PEF L·s⁻¹	2.70±0.60	6.31	2.55±0.60	6.35	<0.01^ƒ	0.74
6–8 yrs^§
FVC L	1.37±0.41	5.53	1.42±0.45	5.00	0.25	0.64
FEV₁ L	1.28±0.30	4.64	1.26±0.30	5.06	0.57	0.69
PEF L·s⁻¹	2.97±0.69	7.13	2.69±0.67	8.45	<0.01^ƒ	0.47
Experienced children						0.12
4–5 yrs^##
FVC L	1.27±0.32	9.28	1.30±0.36	5.53	0.43	0.27
FEV₁ L	1.15±0.31	5.72	1.13±0.32	5.60	0.43	0.25
PEF L·s⁻¹	2.68±0.93	6.45	2.46±0.83	8.65	0.04^ƒ
6–8 yrs^¶¶
FVC L	1.58±0.22	5.72	1.66±0.27	4.87	<0.01^ƒ	0.39
FEV₁	1.46±0.23	5.39	1.47±0.24	3.89	0.68	0.18
PEF L·s⁻¹	3.57±0.70	5.85	3.42±0.73	5.21	<0.01^ƒ	0.51

FVC: forced vital capacity
FEV₁: forced expiratory volume in one second
PEF: peak expiratory flow
⁺: n=25
^§: n=16
^##: n=12
^¶¶: n=35
^#: p‐value of paired samples t‐test between results with and without use of the program
^¶: p‐value of paired samples t‐test between CV% with and without use of the program
^ƒ: statistically significant