I have been away and am catching up with mail. In the discussion of pnd and
bf, I didn't see mention of the population-based study conducted in Victoria
(which has been discussed previously - and is a must for anyone interested
in pnd).
It was  postal survey of all women who gave birth in Victoria in one week in
1989. Response rate was 71.4% (790/1107). Depression was measured by the
Edinburgh Postnatal Depression Scale. Odds ratio for depression at 3 months
was 1.76 for bottle feeding (95% CI 1.16-2.65).
This study had a much larger sample size than other studies which found
higher rates of depression in bf women, and is likely to generalisable (did
I make that up?) because it is population-based (ie not based on a
particular hospital or group of patients).
Astbury J, Brown S, Lumley J, Small R. Birth events, birth experiences and
social differences in postnatal depression. Aust J Public Health 1994; 18:
176-84.
Lisa Amir
MBBS, MMed, IBCLC in Melbourne, Australia

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