Summary
An analysis of the data concerning 1371 hospital offspring population in South India does not indicate any evidence that the determination of sex in the sample is not a chance factor. It revealed that the secondary sex-ratio is neither influenced by the degree of the fathers physical labour (rated from the fathers occupation), nor by the maternal age. The sex-ratio showed a significant association with the seasonality of birth and the birth order.
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From the Anthropological Survey of India, Indian Museum, Calcutta-13.
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Sarkar, D. Variation in the sex-ratio at birth. Indian J Pediatr 36, 30–34 (1969). https://doi.org/10.1007/BF02751857
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DOI: https://doi.org/10.1007/BF02751857