Table 3.

Lung function results at baseline and follow up in control and intervention groups. Values are mean (95% confidence intervals)

	Control group (n=138)			Intervention group (n=113)
	Baseline	Follow up		Baseline	Follow up
Percentage predicted forced expiratory volume in one second before bronchodilator	102.4 (100 to 105)	111.0 (108 to 114)		103.8 (101 to 107)	105.3 (102 to 109)
Percentage predicted forced expiratory volume in one second after bronchodilator	107.2 (105 to 110)	116.1 (113 to 119)		108.5 (104 to 112)	110.2 (107 to 114)
Percentage predicted forced vital capacity before bronchodilator	84.1 (82 to 86)	90.9 (89 to 93)		92.5 (90 to 95)	93.7 (91 to 96)
Forced expiratory volume in one second:forced vital capacity before bronchodilator	89.2 (88 to 90)	89.2 (88 to 91)		89.6 (88 to 91)	89.9 (88 to 92)
Improvement in percentage forced expiratory volume in one second after bronchodilator	5.03 (4.2 to 5.8)	5.10 (4.1 to 6.1)		5.52 (3.8 to 7.2)	5.49 (3.8 to 7.1)