Table 2.
Inter generational Correlation Coefficients of Reproductive Indicators by Birth Cohort
| BIRTH COHORT OF INDEX WOMEN | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| INDEX WOMEN/MOTHERS | 1840–49 | 1850–59 | 1860–69 | 1870–79 | 1880–89 | 1890–99 | ||||||
| INDICATOR | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. |
| Children ever born (CEB) | 0.063 | 0.051 | 0.047 | 0.088 *** | 0.106 *** | 0.092 *** | ||||||
| Relative children ever born | 0.068 | 0.048 | 0.048 * | 0.090 *** | 0.111 *** | 0.097 *** | ||||||
| Age at first marriage | −0.033 | 0.089 ** | 0.072 ** | 0.108 *** | 0.198 *** | 0.160 *** | ||||||
| Age at first childbirth | −0.014 | 0.072 * | 0.050 * | 0.104 *** | 0149 *** | 0.131 *** | ||||||
| Age at last childbirth | 0.034 | 0.016 | 0.059 ** | 0.057 * | 0.068 *** | 0.049 *** | ||||||
| Duration of reproductive period | 0.049 | −0.030 | 0.000 | 0.081 *** | 0.089 *** | 0.061 *** | ||||||
| Relative duration of reproductive period | 0.054 | −0.040 | 0.003 | 0.080 *** | 0.089 *** | 0.064 *** | ||||||
| Intensity of fertility | −0.050 | 0.032 | 0.014 | 0.002 | 0.013 | 0.014 | ||||||
| Relative intensity of fertility | −0.049 | 0.036 | 0.016 | −0.001 | 0.014 | 0.013 | ||||||
| Number of cases (N) | 250 | 781 | 1,723 | 2,996 | 4,930 | 7,661 | ||||||
| BIRTH COHORT OF INDEX WOMEN | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| INDEX WOMEN/MOTHERS-IN-LAW | 1840–49 | 1850–59 | 1860–69 | 1870–79 | 1880–89 | 1890–99 | ||||||
| INDICATOR | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. | COEF. | SIG. |
| Children ever born (CEB) | 0.051 | −0.014 | −0.001 | 0.018 | 0.080 *** | 0.101 *** | ||||||
| Relative children ever born | 0.040 | −0.021 | 0.012 | 0.026 | 0.072 *** | 0.097 *** | ||||||
| Age at first marriage | 0.138 * | 0.024 | 0.038 | 0.047 ** | 0.080 *** | 0.091 *** | ||||||
| Age at first childbirth | 0.063 | 0.056 | 0.020 | 0.023 | 0.051 *** | 0.089 *** | ||||||
| Age at last childbirth | 0.079 | −0.011 | 0.048 * | 0.017 | 0.020 | 0.030 * | ||||||
| Duration of reproductive period | 0.097 | −0.002 | −0.013 | 0.017 | 0.030 | 0.062 *** | ||||||
| Relative duration of reproductive period | 0.107 | −0.004 | 0.009 | 0.026 | 0.026 | 0.058 *** | ||||||
| Intensity of fertility | −0.044 | −0.024 | 0.017 | −0.021 | −0.014 | −0.004 | ||||||
| Relative intensity of fertility | −0.028 | −0.014 | 0.020 | −0.023 | −0.013 | −0.008 | ||||||
| Number of cases (N) | 259 | 794 | 1,706 | 2,956 | 4,909 | 7,555 | ||||||
***
p<0.001
**
p<0.001
*
p<0.005
NOTE Person correlation coefficients.