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. 2021 Jul 4;20:63. doi: 10.1186/s12937-021-00722-4

Fig. 1.

Fig. 1

Distribution of rounded nTSH values measured in heel prick blood of new-borns in the Netherlands, A in each calendar year – Kruskal-Wallis H test χ2 = 8149 P < 0.0001, B for each laboratory – Kruskal-Wallis H test χ2 = 7195 P < 0.0001, C across ages at heel prick sampling – Kruskal-Wallis test χ2 = 482 P < 0.0001