P H Jongbloet
Biographic Data
| ID | 3527827 |
|---|---|
| NAME | P H Jongbloet |
| GIVEN NAMES | P H |
| FAMILY NAME | Jongbloet |
| SIGNATURE | JONGBLOET P H |
| AFFILIATIONS | Radboud University Nijmegen |
| VERIFIED | No |
| TOTAL WORKS | 4 |
| TOTAL CITATIONS | 1 |
| WORKS AS AUTHOR | 4 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1985 |
| LATEST PUBLICATION YEAR | 2007 |
| H-INDEX | 1 |
Month of Birth Related to Fecundity and Childlessness Among Contemporary Women
To determine the associations of fecundity and childlessness with month of conception and to find a causal mechanism for these associations, we reanalyzed some of our previous data according to the predictions of the seasonal optimal ripening oocyte (SOptRO) and seasonal preovulatory over-ripeness ovopathy (SPrOO) hypotheses. Prime and minor SOptRO months as well as high-risk, no-risk, and very high risk SPrOO months were defined on the basis of …
Seasonal variation in the prevalence of Down syndrome at birth
STUDY OBJECTIVE: Many studies on seasonality in Down syndrome (DS) have been performed and have come to different conclusions. It is suggested that seasonal variation in hormone production by the hypothalamus-pituitary-ovarian axis just before ovulation leads to seasonality in conception rates of DS. This study aimed to determine whether there is seasonal variation in the prevalence of DS at birth as a proxy for seasonality in DS at conception. D…
Menstrual disorders and month of birth
Menstrual characteristics in a population of 23,227 women who participated in a breast cancer screening programme were considered with respect to month of birth. High and low risk months of birth were defined according to the seasonal preovulatory overripeness ovopathy (SPrOO) hypothesis. Positive associations were found in 11 out of the 14 relations studied. The results were significant for early menarche ( or = 5 weeks), menorrhagia (> or = 7 d…
Extramarital reproduction and infant mortality in rural Galicia (Spain)
Month of Birth Related to Fecundity and Childlessness Among Contemporary Women
To determine the associations of fecundity and childlessness with month of conception and to find a causal mechanism for these associations, we reanalyzed some of our previous data according to the predictions of the seasonal optimal ripening oocyte (SOptRO) and seasonal preovulatory over-ripeness ovopathy (SPrOO) hypotheses. Prime and minor SOptRO months as well as high-risk, no-risk, and very high risk SPrOO months were defined on the basis of …
Extramarital reproduction and infant mortality in rural Galicia (Spain)
Menstrual disorders and month of birth
Menstrual characteristics in a population of 23,227 women who participated in a breast cancer screening programme were considered with respect to month of birth. High and low risk months of birth were defined according to the seasonal preovulatory overripeness ovopathy (SPrOO) hypothesis. Positive associations were found in 11 out of the 14 relations studied. The results were significant for early menarche ( or = 5 weeks), menorrhagia (> or = 7 d…
Seasonal variation in the prevalence of Down syndrome at birth
STUDY OBJECTIVE: Many studies on seasonality in Down syndrome (DS) have been performed and have come to different conclusions. It is suggested that seasonal variation in hormone production by the hypothalamus-pituitary-ovarian axis just before ovulation leads to seasonality in conception rates of DS. This study aimed to determine whether there is seasonal variation in the prevalence of DS at birth as a proxy for seasonality in DS at conception. D…
Month of Birth Related to Fecundity and Childlessness Among Contemporary Women
To determine the associations of fecundity and childlessness with month of conception and to find a causal mechanism for these associations, we reanalyzed some of our previous data according to the predictions of the seasonal optimal ripening oocyte (SOptRO) and seasonal preovulatory over-ripeness ovopathy (SPrOO) hypotheses. Prime and minor SOptRO months as well as high-risk, no-risk, and very high risk SPrOO months were defined on the basis of …
Demography (4 works) · Biology (3 works) · Medicine (3 works) · Birth, Development, and Health (2 works) · Demography (2 works) · Ecology (2 works) · Ecology (2 works) · Population (2 works) · Pregnancy (2 works) · Assisted Reproductive Technology and Twin Pregnancy (1 work)