Seasonal variation in spontaneous abortions. | Zendy

Charles W. Warren | Zendy; Jay J. Gold | Zendy; Carl W. Tyler | Zendy; J. Carson Smith | Zendy; A. Paris | Zendy

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Seasonal variation in spontaneous abortions.

Author(s) -

Charles W. Warren,

Jay J. Gold,

Carl W. Tyler,

J. Carson Smith,

A. Paris

Publication year - 1980

Publication title -

american journal of public health

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 2.284

H-Index - 264

eISSN - 1541-0048

pISSN - 0090-0036

DOI - 10.2105/ajph.70.12.1297

Subject(s) - abortion , demography , induced abortions , medicine , variation (astronomy) , obstetrics , pregnancy , research methodology , family planning , population , environmental health , biology , genetics , physics , sociology , astrophysics

Using a national sample of hospital discharges, we found identical seasonal patterns for spontaneous abortions and conceptions but no significant seasonal variation in the rate of spontaneous abortions per 1,000 conceptions. The differences between our findings and those of previous investigators of spontaneous abortion may reflect our more comprehensive definition of spontaneous abortion, our more complete estimate of the monthly number of conceptions, and our more rigorous statistical analysis. The periodic regression analysis (PRA) reported in our study may be useful in other studies that monitor short-term trends.

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