Table 1—

Demographic characteristics of National Cooperative Inner-city Asthma Study (NCICAS) children who returned at least one diary between June 1–August 31, 1993

	Total	Bronx	East Harlem	Baltimore	Washington DC	Detroit	Cleveland	Chicago	St. Louis
Subjects n	846	143	104	111	92	84	56	138	118
Diaries n	910	151	113	128	99	88	61	141	129
Male %	63	60	61	63	72	63	66	59	62
Black %	71	23	37	90	99	94	98	65	97
Hispanic %	19	66	51	1	0	0	0	27	0
Severe^# %	48	57	42	51	45	49	38	52	42
Morning PEFR L/min⁻¹ mean±sd	206±72.7	217±71.1	211±68.5	206±79.3	205±67.1	190±66.9	193±76.8	206±72.0	205±75.6
10% decline in morning PEFR^¶	14.1	13.4	12.8	13.8	12.7	13.8	13.2	14.8	16.9
Any morning symptom^¶	11.6	11.9	12.1	11.0	10.0	10.5	10.0	11.3	14.2

^#: reported at least 2 classes of medicines at baseline
^¶: incidence. 100 child-days⁻¹
PEFR: peak expiratory flow rate