A History of the Ministry of Information, 1939-46


Comparative figures for different groups of the number of Sanitary Towels Used.

A. Social Groups

Sharp differences as between Social Groups:-

A B C D Total
Average 13.5 10.7 10.4 9.0 10.5
Median 11.7 10.7 9.4 7.2 9.6
Upper Quartile 10.7 7.3 6.2 5.3 6.3
Lower Quartile 15.5 11.8 11.9 11.3 11.8

(The Median is the figure for half the sample, the Quartiles for the 1st and 3rd quarters).

These figures show that all sections of the A sample, even the quarter using fewest, were using more than the average. At least half of the A sample were using as many as the quarter of the whole sample using most, whilst the quarter of the A sample using most were using nearly 50% more than the average for the whole sample.

In all groups the quarter using most were using more than the average for the whole sample, although the difference is most marked in the case of the A group and very much less so for the other groups.

In A and B groups half the sample were using more than the average, and in C and D groups half the sample were using less than the average for the whole sample.

In B, C and D groups the quarter of the sample using fewest were using fewer than the average, in case of D group the worst quarter used only about half of the average number for the whole sample.

Urban and Rural.

Urban Rural Total
Average 10.4 11.0 10.5
Median 9.26 10.9 9.6
Upper Quartile 6.5 7.3 6.3
Lower Quartile 11.8 11.9 11.8

It will be seen that rural use of S.Ts is consistently higher than urban. This difference is greatest in the half of the rural sample using most packet towels.

Age Groups.

20-29 30-39 40-50 Total
Average 10.6 10.8 10.4 10.5
Median 9.5 9.9 9.4 9.6
Upper Quartile 6.3 6.3 6.5 6.3
Lower Quartile 11.9 11.8 11.5 11.8

In comparing the figures for different groups it will be seen that the most uneven distribution is between social groups. And the least differentiated distribution is between age groups.

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