[Study on geographic distribution of smear-positive pulmonary tuberculosis with trend-surface analysis]

The Trend-surface Analysis method was used to study the geographic distribution of smear-positive pulmonary tuberculosis prevalence in China. The prevalence data used in this article was cited from Nation-wide Tuberculosis Surveys in 1979 and 1990. The results showed that smear-positive pulmonary tuberculosis prevalence had obvious characteristics of geographic distribution and the characteristics had been changed within 11 years. In a word, the smear-positive pulmonary tuberculosis prevalence distribution tallies with their quality of tuberculosis control.