Table 1.
Study settings and sample size.
| Level | Settings | Total woman fitting | Sample size |
|---|---|---|---|
| the research criteria | |||
| District (rural) | Phu Son Commune | 220 | 207 |
| Thuy An Commune | 200 | 200 | |
| District (urban) | Trung Tu Commune | 465 | 200 |
| Phuong Lien Commune | 410 | 200 |
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