The Declining Birth Rate in Rotterdam: A Statistical Analysis of the Drop in the Number of Children in 24644 Rotterdam Families During the Last 50 Years

General Survey.- I. Number of children and profession.- II. Number of children and religion.- III. Number of children, profession and religion.- IV. Number of children, profession and year of marriage.- V. Number of children, religion and year of marriage.- VI. Number of children, year of marriage and duration of marriage.- VII. Number of children and age at marriage.- VIII. Number of surviving children, year of marriage and duration of marriage.- IX. Small families and the system of substitution.- X. The children’s religion compared with the parents’ religion in mixed marriages.- XI. Interval between date of marriage and date of the first child’s birth, in connection with profession, religion and year of marriage.- If Chapter XII. Conclusion.- Tables (Absolute numbers).- I. Families according to professional group and number of children.- II. Families according to religion and number of children.- III. Families according to professional group, religion and number of children.- IV. Families according to professional group, period of year of marriage and number of children.- V. Families according to religion, period of year of marriage and number of children.- VI. Families according to duration of marriage, period of year of marriage and number of children.- VII. Families according to age at marriage and number of children.- VIII. Families (I) according to duration of marriage (contracted after January 1, 1918), period of year of marriage and number of children alive.- IX. Families (II) according to duration of marriage (contracted before January 1, 1915), period of year of marriage and number of children alive.- X. Families according to birth interval and a child’s death.- XI. Mixed marriages according to period of year of marriage, number of children andchildren’s religion.- XII. Families according to professional group, religion, period of year of marriage and interval between date of marriage and date of 1st. child’s birth.