Crude birth rates (C.B.R.s) by district rose moderately on the average from pre‐1945 to post‐1945, and substantially increased their variance. It is shown that the near‐eradication of malaria is consistent with the latter phenomenon, but that even in the absence of malaria control the national C.B.R. would have fallen slightly, as it has done in recent years.
A technique is devised by means of which it is possible to establish that these shifts in district C.D.R.S and C.B.R.s, in the decade or so following the war, were due mainly to changes in district age‐specific vital rates rather than to changes in age distributions brought about by past fertility rates or by internal migration.
The paper closes with a brief discussion of other studies of this set of problems. 相似文献
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How MBOs fit in with the other patterns of change associated with CCT.
The reasons why particular local authorities have sold service organizations to MBOs. The immediate and short term implications of MBOs. The longer term prospects for MBO companies in CCT service areas. The prospects for further MBOs being established.