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Table 3 One way Anova and Tukey HSD

From: An inactivated vaccine made from a U.S. field isolate of porcine epidemic disease virus is immunogenic in pigs as demonstrated by a dose-titration

Group   FFN ǂ UM ELISA # SDSU ELISA FMIA £
0 (control) Mean 1.93 D 0.00B 0.05c 0.04C
N = 5 Std.Deviation 2.66 0.00 0.05 0.04
Std. Error 1.19 0.00 0.02 0.02
1 - 8.0 log 10 TCID 50 /mL Mean 7.32*A,B 1.06*A 1.79*A 1.14*A
N = 8 Std.Deviation 1.2 0.17 0.79 0.04
Std. Error 0.42 0.06 0.28 0.01
2 - 7.0 log 10 TCID 50 /mL Mean 5.06B,C 0.29B 0.57B 0.51*B
N = 5 Std.Deviation 3.24 0.39 0.54 0.42
Std. Error 1.45 0.17 0.24 0.19
3 - 6.0 log 10 TCID 50 /mL Mean 4.66C 0.01B 0.07C 0.08C
N = 5 Std.Deviation 2.74 0.02 0.04 0.07
Std. Error 1.23 0.01 0.02 0.03
4 - 8.0 log 10 TCID 50 /mL (Flank) Mean 7.99*A 1.04*A 2.11*A 1.16*A
N = 9 Std.Deviation 1.32 0.40 0.26 0.03
Std. Error 0.44 0.13 0.09 0.01
5 - 8.0 log 10 TCID 50 /mL (Triton® X-100) Mean 6.99*A,B 0.00B 0.04C 0.06C
N = 9 Std.Deviation 1.80 0.01 0.03 0.07
Std. Error 0.60 0.00 0.01 0.02
6 - 7.0 log 10 TCID 50 /mL (Triton® X-100) Mean 6.52*A,B,C 0.11B 0.03C 0.04C
N = 5 Std.Deviation 0.84 0.03 0.04 0.05
Std. Error 0.37 0.011 0.02 0.23
7 - 6.0 log 10 TCID 50 /mL (Triton® X-100) Mean 5.12B,C 0.01B 0.36C,B 0.14C
N = 5 Std.Deviation 0.84 0.02 0.59 0.13
Std. Error 0.37 0.01 0.27 0.06
8 - 8.0 log 10 TCID 50 /mL (Triton® X-100, Flank) Mean 7.54*A 0.14B 0.06C 0.02C
N = 9 Std.Deviation 1.20 0.41 0.45 0.03
Std. Error 0.40 0.14 0.02 0.11
  1. A,B,C,D Tukey HSD lists different letters between groups whose means that are statistically significant. Those with same letters means no significant difference among their means. Tukey HSD used harmonic mean sample size = 6.171 to account for differences in group sizes.
  2. ǂThe FFN results were log2 transformed before analysis.
  3. #The ELISA results are sample to positive (S/P) ratios. The UMN ELISA cutoff is 0.5. The SDSU cutoff for ELISA is S/P of 0.4.
  4. £The FMIA MFI cutoff is 0.1.
  5. *The mean difference is significant at the 0.05 level compared to the control group.