The Indian Journal of Pediatrics

, Volume 36, Issue 2, pp 30–34 | Cite as

Variation in the sex-ratio at birth

  • D. Sarkar
Original Articles


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.


Birth Order Physical Labour Male Birth Selective Mortality Chance Factor 
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Copyright information

© Dr. K C Chaudhuri Foundation 1969

Authors and Affiliations

  • D. Sarkar
    • 1
  1. 1.Calcutta

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