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. 2010 Oct 15;76(24):8019–8025. doi: 10.1128/AEM.00917-10

TABLE 2.

Decay rates of MS2 phage, GA phage, and human adenovirus 2 in raw groundwater at 4 and 20°C

Virus Temp (°C) Cell culture
Real-time RT-PCR
Slope P valuea Decay rate (%/day) T90 (days) 95% confidence limit (days) Slope P valuea Decay rate (%/day) T90 (days) 95% confidence limits (days)
MS2 phage 4 −0.0428 <10−4 9.4 23.4 22.5; 24.2 −0.0029 <10−4 0.7 344.8 323.9; 365.7
20 −0.7195 <10−4 80.9 1.4 1.1; 1.6 −0.1166 <10−4 23.5 8.6 8.1; 9.0
GA phage 4 −0.0503 <10−4 10.9 19.9 19.1; 20.7 −0.0004 0.019 0.1 2,500.0 109.9; 4,890.1
20 −0.8081 <10−4 84.4 1.2 1.1; 1.3 −0.0278 <10−4 6.2 35.9 32.8; 39.2
HAdV2 4 −0.0076 <10−4 1.7 131.6 100.7; 162.8 NSb
20 −0.0279 <10−4 6.2 35.6 33.3; 38.4 −0.0036 <10−4 0.8 278.0 193.3; 362.2
a

Note that use of the Bonferroni correction has only a slight effect on the outcome of the multiple testing procedure displayed in the table, since the slopes of the fitted models (excepting the GA genome at 4°C) remain highly significantly different from 0.

b

NS, slope value was not significantly different from 0.