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Table 3 Results (equal variances assumed) of t -test for the difference of incidence rates of human Brucellosis occurrences between each subsequent and preceding year during 2006-2010

From: Human brucellosis occurrences in inner mongolia, China: a spatio-temporal distribution and ecological niche modeling approach

  Levene’s test t-test for equality of means
Year F. Sig. t df Sig.(2-tailed) Mean difference Std. error difference 95% lower 95% upper
2007 v.s. 2006 0.113 0.737 −0.228 176 0.820 −0.159 0.699 −1.538 1.220
2008 v.s. 2007 0.851 0.358 −1.088 176 0.278 −0.722 0.664 −2.032 0.588
2009 v.s. 2008 5.090 0.025 −2.142 176 0.034 −1.189 0.555 −2.285 −0.094
2010 v.s. 2009 0.399 0.528 −0.398 176 0.691 −0.178 0.446 −1.058 0.703
2010 v.s. 2006 17.594 0.000 −3.830 176 0.000 −2.248 0.587 −3.406 −1.090