Example sentences of "marriage and at [adj] [noun] " in BNC.
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| 1 | The focus is upon demographic factors of age at marriage and at first birth , maternal age , order of birth and family size , and the amount of time that elapses between births . |
| 2 | The value of the correlation coefficient is high , indicating a very strong relationship between age at first marriage and at first birth . |
| 3 | It may be observed that the linear regression line in Fig. 1 represents only the general tendency of the association between women 's age at first marriage and at first birth . |
| 4 | In other words , there is a negative correlation between median age at first marriage and at first birth . |
| 5 | On average , the interval between the median age at first marriage and at first birth is two years . |
| 6 | Also , the more moderate negative impact of teenage childbearing upon infant mortality in several countries , first of all in the Western Hemisphere region , where infant mortality in the maternal age group under 20 is lower than in the age group over 40 , may reflect , among other things ( such as later age at marriage and at first birth , higher educational and living standards , etc. ) the lower overall level of infant mortality . |