Family planning A 1954 study of 1438 pregnant women examined the association between the woman’s education level and the occurrence of unplanned pregnancies, producing these data:

Do these data provide evidence of an association between family planning and education level? (Fertility Planning and Fertility Rates by Socio-Economic Status, Social and Psychological Factors Affecting Fertility, 1954)

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Number of Pregnancies % Unplanned Education Level <3 Yr HS 3+ Yr HS Some College 591 608 239 55.4% 42.7% 66.2%