Abstract S105 Table 1

Mean changes in, FVC, at IOS 5Hz andHz, FeNO and PWV after exposures began in Oxford Street (OS) and Hyde Park (HP)

	Healthy				COPD

OS	HP	Δd	p	OS	HP	Δd	p

Spirometry (difference%)
FEV₁ 1 h	0.78	3.46	-2.68	0.09	-2.30	1.70	-4.00	0.01 *
FEV₁ 2 h	0.49	2.38	-1.89	0.17	-1.43	-0.38	-1.05	0.39
FEV₁ 6 h	1.84	7.89	-6.05	0.01 *	1.68	2.08	-0.41	0.79
FEV₁ 24h	0.05	4.22	-4.17	0.01 *	1.85	0.92	0.93	0.65
FVC 1 h	0.00	1.81	-1.81	0.28	-1.84	1.57	-3.41	0.02 *
FVC 2 h	-1.00	1.16	-2.16	0.32	-3.22	-0.11	-3.11	0.09
FVC 6 h	0.22	3.57	-3.35	0.17	1.38	1.60	-0.22	0.90
FVC 24h	-1.60	-2.84	1.24	0.68	1.60	2.54	-0.95	0.73
IOS 5hz (difference kPa/l/s)
IOS 5hz 4 h	-0.01	-0.01	0.00	0.78	0.03	-0.02	0.05	0.01 *
IOS 20hz 4 h	-0.01	-0.02	0.01	0.48	-0.01	-0.04	0.03	0.09
IOS 20hz (difference kPa/l/s)
IOS 20hz 4 h	-0.01	-0.01	0.00	0.80	-0.72	-0.03	-0.68	0.35
IOS 20hz 24h	-0.01	-0.01	0.00	0.73	0.00	-0.03	0.02	0.04 *
FeNO (difference ppb)
3h	-5	-4	-1	0.75	-2	-4	2	0.71
5h	-4	-2	-2	0.37	-7	-7	-1	0.89
24h	-4	-1	-3	0.26	2	-6	8	0.09
PWV (difference m/s)
3 h	-0.1	-0.2	0.2	0.47	0.1	-0.6	0.8	0.03 *
6h	0.3	0.0	0.3	0.32	0.2	-0.3	0.5	0.03 *
24 h	0.6	-0.4	1.0	0.04 *	0.3	-0.4	0.7	0.32

* p < 0.05
Δ d Mean difference of difference between each exposure site