Secular trends, analysis

The most important (and controversial) conclusion by Jacobson (2002a, b) concerning the anthropogenic nature of present-day climate change is based on analysis of the SAT and SST combined data (i.e., on the secular trend of mean average annual global surface temperature, GST). In this connection, two questions arise ... 

Figueiredo et al. 2009). In addition, an analysis of secular trends of colorectal cancer incidence in the United States also prompted concerns by showing transient upward fluctuations in colorectal cancer after 1995 that were attributed to the introduction of mandatory folic acid fortification in February 1996 (although the fluctuations in colorectal cancer incidence could equally reflect improved screening introduced at the same time) (Mason et al. 2007). 

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