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" ... Yes, that's right - Campbell et al. got their statistics wrong. Oops! They reported that the 2-12 month group had signficantly lower serum thiol levels, and the 1-6 year group was significantly higher levels, with a p-value of 0.001. From the numbers in their own tables, I was able to compute the true significance values, to determine if their reported value of 146 (plus or minus 60) was significantly higher than the control group's average of 124 (plus or minus 48). It turns out that this difference isn't significant at any level, and certainly not at a p-value of 0.001. A decent journal would never have published this painfully bad analysis. ... "