Table 2.

Person days with symptoms in the diary (n = number of expected person days)

	Helsinki		Athens		Amsterdam		Birmingham
	n = 6480	%	n = 6300	%	n = 6480	%	n = 5220	%
Woken with breathing problems
No	4759	73.4	5334	84.7	4897	75.6	3953	75.7
Yes	978	15.1	667	10.6	958	14.8	808	15.5
Non response	743	11.5	299	4.7	625	9.6	459	8.8
Shortness of breath
No	3987	61.5	4891	77.7	3410	52.6	3111	59.6
Slight symptoms	1774	27.4	1015	16.1	2179	33.6	1443	27.6
Severe symptoms	140	2.2	96	1.5	284	4.4	206	4.0
Non response	579	8.9	298	4.7	607	9.4	460	8.8
Wheeze
No	4932	76.1	4325	68.7	4554	70.3	3182	61.0
Slight symptoms	923	14.2	1627	25.8	1102	17.0	1383	26.5
Severe symptoms	49	0.8	51	0.8	134	2.1	196	3.7
Non response	576	8.9	297	4.7	690	10.6	459	8.8
Cough
No	3418	52.8	4303	68.3	3251	50.1	2189	41.9
Slight symptoms	2305	35.6	1583	25.1	2234	34.5	2026	38.8
Severe symptoms	184	2.8	116	1.9	289	4.5	546	10.5
Non response	573	8.8	298	4.7	706	10.9	459	8.8
Phlegm
No	1973	30.5	3291	52.2	2957	45.6	2087	40.0
Slight symptoms	3462	53.4	2448	38.9	2597	40.1	2137	40.9
Severe symptoms	485	7.5	264	4.2	206	3.2	537	10.3
Non response	560	8.6	297	4.7	720	11.1	459	8.8
Limitation of vigorous activitiesa
No	3837	59.2	2716	43.1	3714	57.3	2663	51.0
Did activity slowly	1259	19.4	2661	42.2	897	13.8	988	18.9
Avoided activity completely	603	9.3	587	9.3	891	13.8	1113	21.3
Non response	781	12.1	336	5.4	978	15.1	456	8.8
Limitation of moderate activitiesa
No	3775	58.3	3928	62.3	4237	65.4	3420	65.5
Did activity slowly	2030	31.3	1874	29.8	1266	19.5	1211	23.2
Avoided activity completely	88	1.4	184	2.9	135	2.1	131	2.5
Non response	587	12.0	314	5.0	842	13.0	458	8.8
Limitation of walkinga
No	4867	75.1	3455	54.8	4449	68.7	3472	66.5
Did activity slowly	795	12.3	2438	38.7	1132	17.5	1228	23.5
Avoided activity completely	94	1.4	62	1.0	152	2.3	63	1.2
Non response	724	11.2	345	5.5	747	11.5	457	8.8

^a due to breathing problems.