Portrait of U.S. Fertility Shows Average Number of Births, Family-Size Differences are Shrinking

1985 ◽  
Vol 17 (1) ◽  
pp. 36
Keyword(s):  
1977 ◽  
Vol 9 (2) ◽  
pp. 227-237
Author(s):  
G. N. Pollard

SummaryThe decline in the number of legitimate live births in England and Wales from the peak in 1964 has been partitioned into components due to changes in fertility rates, components due to changes in the composition of the population exposed to risk, and an interaction component. Fertility rates specific for age of mother at birth of child, duration of marriage, parity and age of mother at marriage were considered but in all cases it was found that the decline was not as great as the change in fertility rates implied. This was due to increases in the number of births due to changes in the composition of the population exposed to risk.The decline in the number of births due to changes in fertility rates specific for age of mother/duration of marriage/parity/age at marriage has been expressed as a percentage of the number of births to each specific group and it was found that generally the percentage decline became greater as age of mother/duration of marriage/parity/age at marriage increased. However this did not apply for the youngest age groups, the shortest durations of marriage, the youngest ages at marriage and the lowest parity. This result needs further investigation. Is this evidence of a deferment of births by young mothers (with short durations, low parities and young ages at marriage)? Alternatively, is this evidence of the beginning of a really significant and widespread change of attitude to family size?


2000 ◽  
Vol 55 (6) ◽  
pp. 599-612 ◽  
Author(s):  
Joseph Lee Rodgers ◽  
H. Harrington Cleveland ◽  
Edwin van den Oord ◽  
David C. Rowe
Keyword(s):  

1972 ◽  
Author(s):  
Thomas Poffenberger ◽  
Robert Buckhout ◽  
Martin Rosenman ◽  
Eugene Weiss ◽  
Nancy Russo

Author(s):  
Leah Sawyer Vanderwerp

Using data from the National Longitudinal Survey of Youth-Mother and Child samples, I investigated the relationships among child and adolescent depressive symptoms, having a chronically ill sibling, and other child and familial demographic variables. From research on social support and social role transitions, with the Stress Process as a theoretical model, I hypothesized that children with chronically ill siblings experience more depressive symptoms. Specifically, I looked at age, gender, birth order and family size as potentially reducing the effect size of having a chronically ill sibling. Findings showed that having a chronically ill sibling is associated with demonstrating more depressive symptoms both in the bivariate and multivariate analyses. Although age, gender, birth order and family size do not interact significantly with having a chronically ill sibling in predicting depressive symptoms, they do present interesting findings about childhood depressive symptoms in general. Thus, the results of this study suggest specific and meaningful paths for future research.


Author(s):  
Ghassan H. Jameel ◽  
Ali Ibrahim Ali Al-Ezzy

Objectives are to determine antifungal activity of Ivermectin and Calvatiacraniiformis as a novel alternative therapy for aspergillus niger associated acute otitis media (AOM) among rural children of Diyala province; correlation of sociodemographic factors with frequency of infection. Ear swabs taken from 58 infected children and cultured onSabouraud dextrose agar for 7-14 days .Macroscopic and microscopic criteria used for diagnosis of A.niger .High isolation rate for A.niger (27.59%) among children of (4-6) years with significant difference between age groups ( p value 0.039); genders ( p value 0.004);house status(p value=0.018);family size (p value =0.00006334) and month of infection (p value=0.000). A.niger infection negatively correlated with patients age (p value =0.039), family economy and house status (p value =0.000),family size (p value =0.000). Alcohol extract of C.craniiformis (100mg, 200mg, 400mg, 500mg, 600mg, 800mg and 1000 mg) and ivermectin (0.5%,1 % and 2%) restricted the growth of A. niger after 3 days .Significance difference reported between all concentrations except 100 mg and 200 mg ; 600 mg and 800 mg. Significance difference in inhibitory activity between concentration 1% and 2%,0.5% and 2% of Ivermectin respectively. Conclusions: A.niger infections positively correlated with family size and inversely with age and family economy. The growth of A nigersignificantly restricted by alcohol extract of C.craniiformis and Ivermectin in concentration dependent manner. The powerful concentration was 1000mg, for C.craniiformis and 2% for Ivermectin. Thus, C.craniiformis and Ivermectin consider a novel antifungal agents that can be used in clinical practice for treatment of A.niger associated otitis media that represents a clinical problem in children and need serious attention from clinicians.


Soviet Review ◽  
1972 ◽  
Vol 13 (4) ◽  
pp. 380-398
Author(s):  
V. A. Belova
Keyword(s):  

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