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Table 1 The ADF tests of Modeling data

From: Statistical methods for predicting tuberculosis incidence based on data from Guangxi, China

Before first-order seasonal difference After first-order seasonal difference
t-Statistic Prob t-Statistic Prob
Augmented Dickey-Fuller test statistic − 0.13 0.94 Augmented Dickey-Fuller test statistic −6.09 < 0.01
Test critical values: 1% level −3.52   Test critical values: 1% level −3.52  
5% level −2.9    5% level − 2.9  
10% level −2.59    10% level −2.59