TABLE 3

Differences in Maternal Characteristics Between Children With Missing and Nonmissing Data on Breastfeeding and Doctor-Attended Infectious Diseases at the Age of 6 Months: Eligible Cohort (N= 7116)

Included in Analysis (n = 4164), % (n)aNot Included in AnalysisP
Missing Breastfeeding Data (n = 2498), % (n)bMissing Infectious Diseases Data (n = 454), % (n)c
Maternal age
    <2615.0 (624)28.9 (722)14.1 (64)
    26–3030.5 (1270)29.2 (729)26.7 (121)
     >3054.5 (2270)41.9 (1047)59.3 (269)<.01
Education
    Low6.2 (246)14.1 (292)9.9 (42)
    Intermediate38.7 (1538)50.9 (1057)32.3 (137)
    High55.2 (2195)35.0 (726)57.8 (245)<.01
Ethnicity
    Dutch61.1 (2469)44.6 (953)58.0 (250)
    Non-Dutch38.9 (1574)55.4 (1184)42.0 (181)<.01
  • Values are percentages (absolute numbers). Differences between included and nonincluded groups were compared by using χ2 tests.

  • a Data were missing for education (n = 185) and ethnicity (n = 121).

  • b Data were missing for education (n = 423) and ethnicity (n = 361).

  • c Data were missing for education (n = 30) and ethnicity (n = 23).