Table 1

Agreement between responses to questions on childhood respiratory illness in questionnaires completed by children and those completed by parents

	No of subjects1-150		Prevalence reported by children (%)		Prevalence reported by parents (%)		Proportion observed agreement (%)
		Parents +							Parents +	Parents −	Parents −	κ Statistic
		Child +							Child −	Child +	Child −	All ages	8–9 years	10–12 years
Respiratory symptom
Cough	293	281	173	1413	21.6	26.4	79.0	0.43	0.44	0.42
Phlegm	355	371	240	1159	28.0	32.9	71.3	0.33	0.32	0.34
Wheeze	65	117	83	1776	7.3	8.9	90.2	0.34	0.26	0.41
Short of breath	70	60	113	1727	9.3	6.6	91.2	0.40	0.31	0.48

Respiratory disease
Asthma	89	23	41	1667	7.1	6.2	96.5	0.72	0.65	0.76
Allergic rhinitis	427	151	134	1188	29.5	30.4	85.0	0.64	0.60	0.68
Sinusitis	28	25	32	1721	3.3	2.9	96.7	0.48	0.34	0.57
Pneumonia	59	61	19	1688	4.3	6.6	95.6	0.57	0.60	0.54
Bronchitis	164	177	70	1451	12.6	18.3	86.7	0.50	0.50	0.50
Tuberculosis	2	1	6	1788	0.4	0.2	99.6	0.36	0.67	0.25

↵1-150 Refers to number of children with/without self reported (child +/−) or parent reported (parents +/−) symptoms or diseases. The total number of responses was less than 2225 because of incomplete data in some questionnaires.