Infant Mortality

  1. Why would females have the higher population in the younger age groups (0-4 yrs.)? Does it have something to do with a biological advantage during conception?

  2. jcsd
  3. Phobos

    Phobos 1,982
    Staff Emeritus
    Science Advisor
    Gold Member

    Assuming that statistic to be true (I haven't checked), I do recall hearing that the risk of SIDS (sudden infant death syndrome) is higher for males than for females. The cause of SIDS is unknown. Not to say that SIDS is the only reason, but it may be one factor.
  4. It is not.

    • Sex ratio:

      at birth: 1.06 male(s)/female
      under 15 years: 1.06 male(s)/female
      15-64 years: 1.03 male(s)/female
      65 years and over: 0.79 male(s)/female
      total population: 1.01 male(s)/female (2004 est.)
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