Slide 1

1-20-051 Multi-way Anova Identifying and quantifying sources of variation Ability to "factor out" certain sources - ("adjusting") For the beginning, we will reproduce paired t-test results by assuming that arrays are one of the factors in a Two-way ANOVA Second, adjusting for the dye effects in a Three-way ANOVA Third, four and more - way ANOVA when having multiple factors of interest Slide 2 1-20-052 Sources of variation And the Two-way ANOVA Slide 3 1-20-053 Statistical Inference in Two-way ANOVA Statistical Model Parameter Estimates Null Hypotheses Null Distributions Slide 4 1-20-054 Alternative Formulations of the Two-way ANOVA No-intercept Model Parameter Estimates Gets complicated Regardless of how the model is parametrized certain parameters remain unchanged (Trt 2 -Trt 1 ) In this sense all formulations are equivalent Null Hypotheses Null Distributions Slide 5NNBLimmadataC$M[1,] 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 -0.05280598 -0.15767422 0.40130216 -0.35292771 -0.22061576 -0.21653047 > NNBLimmadataC$A[1,] 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 6.289658 6.129577 6.483613 6.452317 6.510143 7.106134 > DAnova$M[1,] 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 6.263255 6.050740 6.684264 6.275853 6.399835 6.997869 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 6.316061 6.208414 6.282962 6.628781 6.620451 7.214399"> 1-20-055 Re-organizing data for ANOVA > DAnova DAnova$weights DAnova$M DAnova$A attributes(DAnova) $names [1] "weights" "targets" "genes" "printer" "M" "A" $class [1] "MAList" attr(,"package") [1] "limma" > NNBLimmadataC$M[1,] 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 -0.05280598 -0.15767422 0.40130216 -0.35292771 -0.22061576 -0.21653047 > NNBLimmadataC$A[1,] 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 6.289658 6.129577 6.483613 6.452317 6.510143 7.106134 > DAnova$M[1,] 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 6.263255 6.050740 6.684264 6.275853 6.399835 6.997869 51-C1-3-vs-W1-5 60-W2-3-vs-C2-5 72-C3-3-vs-W3-5 79-W4-3-vs-C4-5 82-C5-3-vs-W5-5 97-W6-3-vs-C6-5 6.316061 6.208414 6.282962 6.628781 6.620451 7.214399 Slide 6array array [1] 1 2 3 4 5 6 1 2 3 4 5 6"> 1-20-056 Setting-up the design matrix for limma > targets SlideNumber FileName Cy3 Cy5 Date 51-C1-3-vs-W1-5 51 51-C1-3-vs-W1-5.gpr C W 11/8/2004 60-W2-3-vs-C2-5 60 60-W2-3-vs-C2-5.gpr W C 11/8/2004 72-C3-3-vs-W3-5 72 72-C3-3-vs-W3-5.gpr C W 11/8/2004 79-W4-3-vs-C4-5 79 79-W4-3-vs-C4-5.gpr W C 11/8/2004 82-C5-3-vs-W5-5 82 82-C5-3-vs-W5-5.gpr C W 11/8/2004 97-W6-3-vs-C6-5 97 97-W6-3-vs-C6-5.gpr W C 11/8/2004 > trt trt [1] "W" "C" "W" "C" "W" "C" "C" "W" "C" "W" "C" "W" > array array [1] 1 2 3 4 5 6 1 2 3 4 5 6 Slide 7 1-20-057 Setting-up the design matrix for limma > designa designa factor(array)1 factor(array)2 factor(array)3 factor(array)4 factor(array)5 factor(array)6 factor(trt)W 1 1 0 0 0 0 0 1 2 0 1 0 0 0 0 0 3 0 0 1 0 0 0 1 4 0 0 0 1 0 0 0 5 0 0 0 0 1 0 1 6 0 0 0 0 0 1 0 7 1 0 0 0 0 0 0 8 0 1 0 0 0 0 1 9 0 0 1 0 0 0 0 10 0 0 0 1 0 0 1 11 0 0 0 0 1 0 0 12 0 0 0 0 0 1 1 attr(,"assign") [1] 1 1 1 1 1 1 2 attr(,"contrasts") attr(,"contrasts")$"factor(array)" [1] "contr.treatment" attr(,"contrasts")$"factor(trt)" [1] "contr.treatment" Slide 8 designa A1 A2 A3 A4 A5 A6 W 1 1 0 0 0 0 0 1 2 0 1 ">designa A1 A2 A3 A4 A5 A6 W 1 1 0 0 0 0 0 1 2 0 1 0 0 0 0 0 3 0 0 1 0 0 0 1 4 0 0 0 1 0 0 0 5 0 0 0 0 1 0 1 6 0 0 0 0 0 1 0 7 1 0 0 0 0 0 0 8 0 1 0 0 0 0 1 9 0 0 1 0 0 0 0 10 0 0 0 1 0 0 1 11 0 0 0 0 1 0 0 12 0 0 0 0 0 1 1 attr(,"assign") [1] 1 1 1 1 1 1 2 attr(,"contrasts") attr(,"contrasts")$"factor(array)" [1] "contr.treatment" attr(,"contrasts")$"factor(trt)" [1] "contr.treatment"">designa A1 A2 A3 A4 A5 A6 W 1 1 0 0 0 0 0 1 2 0 1 " title="1-20-058 Setting-up the design matrix for limma > colnames(designa) designa A1 A2 A3 A4 A5 A6 W 1 1 0 0 0 0 0 1 2 0 1 "> 1-20-058 Setting-up the design matrix for limma > colnames(designa) designa A1 A2 A3 A4 A5 A6 W 1 1 0 0 0 0 0 1 2 0 1 0 0 0 0 0 3 0 0 1 0 0 0 1 4 0 0 0 1 0 0 0 5 0 0 0 0 1 0 1 6 0 0 0 0 0 1 0 7 1 0 0 0 0 0 0 8 0 1 0 0 0 0 1 9 0 0 1 0 0 0 0 10 0 0 0 1 0 0 1 11 0 0 0 0 1 0 0 12 0 0 0 0 0 1 1 attr(,"assign") [1] 1 1 1 1 1 1 2 attr(,"contrasts") attr(,"contrasts")$"factor(array)" [1] "contr.treatment" attr(,"contrasts")$"factor(trt)" [1] "contr.treatment" Slide 9 1-20-059 Comparing to paired t-test > Anova > Anova$coefficients[2,] A1 A2 A3 A4 A5 A6 W 8.36197475 9.90627295 11.34002704 10.77586480 9.35096212 9.92299117 -0.03068036 > LimmaPTT$coefficients[2] [1] -0.03068036 > Anova$coefficients[1,] A1 A2 A3 A4 A5 A6 W NA NA 6.3898451 6.3585492 6.4163747 7.0123661 0.1875361 > LimmaPTT$coefficients[1] [1] 0.1875361 > Slide 10 plot(Anova$sigma,LimmaPTT$sigma) > plot(Anova$stdev.unsc">plot(Anova$sigma,LimmaPTT$sigma) > plot(Anova$stdev.unscaled[,"W"],LimmaPTT$stdev.unscaled) > plot(Anova$sigma*Anova$stdev.unscaled[,"W"],LimmaPTT$sigma*LimmaPTT$stdev.unscaled) > plot(Anova$df.residual,LimmaPTT$df.residual)">plot(Anova$sigma,LimmaPTT$sigma) > plot(Anova$stdev.unsc" title="1-20-0510 Comparing to paired t-test > plot(Anova$coefficients[,"W"],LimmaPTT$coefficients) > plot(Anova$sigma,LimmaPTT$sigma) > plot(Anova$stdev.unsc"> 1-20-0510 Comparing to paired t-test > plot(Anova$coefficients[,"W"],LimmaPTT$coefficients) > plot(Anova$sigma,LimmaPTT$sigma) > plot(Anova$stdev.unscaled[,"W"],LimmaPTT$stdev.unscaled) > plot(Anova$sigma*Anova$stdev.unscaled[,"W"],LimmaPTT$sigma*LimmaPTT$stdev.unscaled) > plot(Anova$df.residual,LimmaPTT$df.residual) Slide 11 > designad dye> designad dye > designadAnovad > Anova$coefficients[2,] A1 A2 A3 A4 A5 A6 W 8.36197475 9.90627295 11."> 1-20-0512 Adjusting for Dye - Three-way ANOVA >Anovad > Anova$coefficients[2,] A1 A2 A3 A4 A5 A6 W 8.36197475 9.90627295 11.34002704 10.77586480 9.35096212 9.92299117 -0.03068036 > LimmaPTT$coefficients[2] [1] -0.03068036 > Anovad$coefficients[2,] A1 A2 A3 A4 A5 A6 Cy5 W 8.38440701 9.92870520 11.36245930 10.79829705 9.37339438 9.94542342 -0.04486451 -0.03068036 > Anova$coefficients[1,] A1 A2 A3 A4 A5 A6 W NA NA 6.3898451 6.3585492 6.4163747 7.0123661 0.1875361 > LimmaPTT$coefficients[1] [1] 0.1875361 > Anovad$coefficients[1,] A1 A2 A3 A4 A5 A6 Cy5 W NA NA 6.43844153 6.40714571 6.46497115 7.06096259 -0.09719295 0.18753615 > Slide 13 plot(Anovad$sigma,LimmaPTT$sigma) > plot(Anovad$stdev.u">plot(Anovad$sigma,LimmaPTT$sigma) > plot(Anovad$stdev.unscaled[,"W"],LimmaPTT$stdev.unscaled) > plot(Anovad$sigma*Anova$stdev.unscaled[,"W"],LimmaPTT$sigma*LimmaPTT$stdev.unscaled) > plot(Anovad$df.residual,LimmaPTT$df.residual)">plot(Anovad$sigma,LimmaPTT$sigma) > plot(Anovad$stdev.u" title="1-20-0513 Comparing to paired t-test > plot(Anovad$coefficients[,"W"],LimmaPTT$coefficients) > plot(Anovad$sigma,LimmaPTT$sigma) > plot(Anovad$stdev.u"> 1-20-0513 Comparing to paired t-test > plot(Anovad$coefficients[,"W"],LimmaPTT$coefficients) > plot(Anovad$sigma,LimmaPTT$sigma) > plot(Anovad$stdev.unscaled[,"W"],LimmaPTT$stdev.unscaled) > plot(Anovad$sigma*Anova$stdev.unscaled[,"W"],LimmaPTT$sigma*LimmaPTT$stdev.unscaled) > plot(Anovad$df.residual,LimmaPTT$df.residual) Slide 14 1-20-0514 Comparing to paired t-test > AnovaB AnovadB volcanoplot(AnovaB,coef=7) > volcanoplot(AnovadB,coef=8)