Author: Woolhouse, Mark; Scott, Fiona; Hudson, Zoe; Howey, Richard; Chase-Topping, Margo
Title: Human viruses: discovery and emergence Document date: 2012_10_19
ID: 0i59vlyd_10
Snippet: Piecewise linear regression revealed two statistically significant (p , 0.05) upswings in the rate of virus discovery: in 1930 (95% confidence intervals (CIs) 1927-1933) and in 1954 (1952-1955) . Since 1954 the mean rate of discovery has been 3.37 species per year with variance 3.35, consistent with a Poisson process. However, there has been a slight but statistically significant downward trend in the rate of discovery (a linear regression of (co.....
Document: Piecewise linear regression revealed two statistically significant (p , 0.05) upswings in the rate of virus discovery: in 1930 (95% confidence intervals (CIs) 1927-1933) and in 1954 (1952-1955) . Since 1954 the mean rate of discovery has been 3.37 species per year with variance 3.35, consistent with a Poisson process. However, there has been a slight but statistically significant downward trend in the rate of discovery (a linear regression of (count per year) 0.5 against year has slope 20.010, 95% CIs 20.020 to 0.0, p ¼ 0.049).
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