Table 2.

Completeness on overall illness in subgroups

	Completeness
Child's asthma status	p = 0.2698
With asthma (48)	0.91 [0.90,0.92]
Without asthma (212)	0.90 [0.87,0.92]
Household income	p = 0.0589
High (65)	0.93 [0.91,0.94]
Medium (125)	0.91 [0.90,0.93]
Low (69)	0.89 [0.86,0.91]
Mother's education	p = 0.1937
Elementary (103)	0.90 [0.87,0.91]
College (62)	0.92 [0.90,0.94]
Medium (64)	0.92 [0.90,0.94]
University (31)	0.93 [0.89,0.95]
Mother's employment	p = 0.2842
Professional (114)	0.92 [0.90,0.94]
Non-professional (96)	0.91 [0.89,0.92]
Unemployed (24)	0.88 [0.82,0.92]
Student (26)	0.91 [0.87,0.94]

Number of patients in each group in parenthesis, 95% Confidence intervals in brackets.