Educational homogamy and parameters of reproduction.

<p>(a) Percentage of childless women, (b) woman's mean offspring number, (c) woman's mean age at first marriage, and (d) percentage couples, calculated for each combination of woman's educational category W1 through W4 and husband's educational category M1 through M4 (W1, M1, less than primary completed; W2, M2, primary completed; W3, M3, secondary completed; W4, M4, university completed). Blue bars: wife is higher educated than husband; red bars: both spouses have the same level of education; green bars: husband is higher educated than wife.