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. 2017 Feb 24;7:36. doi: 10.1038/s41598-017-00081-3

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© The Author(s) 2017

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Matrix of p values from Hotelling’s T² tests. Under H₀ the T² statistic follows a central F distribution. The test is described in the Methods section. We compare the incidence rates of TB among resident Singaporeans, for planning areas of Singapore for a pairs of years. The colour red implies significant statistical difference in overall spatial risk between the two years while blue implies no difference.