Figure 3From: Review of risk factors for human echinococcosis prevalence on the Qinghai-Tibet Plateau, China: a prospective for control optionsTrends of age specified prevalence of human echinococcosis on the Qinghai-Tibet Plateau. Notes: 1. Data source: 4,7, and 24. 2. Sample size was 23,785. 3. Linearity test: F = 124.9, P = 0.0001.Back to article page