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Table 1 Sampling framework

From: Severity and factors of menopausal symptoms in middle-aged women in Gansu Province of China: a cross-sectional study

Population

Family income

Large

Medium

Small

 < 1800 $

1

2

3

1800–3600 $

4

5

6

 > 3600 $

7

8

9

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BMC Women's Health

ISSN: 1472-6874

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