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Table 4 Changes in the daily iodized salt intake

From: Association of iodized salt with goiter prevalence in Chinese populations: a continuity analysis over time

Year Mean Std. Deviation Std. Error P value F value
2011 (n = 31) 12.8236 2.20918 0.39678 0.002
2012 (n = 31) 12.8477 2.19188 0.39367 0.003
2013 (n = 30a) 12.0787 2.02006 0.36881 0.176
Test of homogeneity of variances 0.692 0.370
ANOVA 0.647 0.886
  1. a: There are 30 provinces because Shanghai provided no monitoring data in 2013