Table 2 Completeness on overall illness in subgroups

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]