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In a study, researchers investigated the effect of two drugs on patient reported quality of life (higher scores indicate higher quality.) Participants were randomized to

In a study, researchers investigated the effect of two drugs on patient reported quality of life (higher scores indicate higher quality.) Participants were randomized to receiveone, or both,of the two drugs or a placebo. They also controlled for baseline quality of life before initiation of treatment. The ANOVA table for the above analyses is given below. Themean in theplacebo group is the given reference for comparisons (so Treatment A and Treatment B are dummy variables). Based on the table what can you conclude about the reported quality of life for the two new drugs?

Source

DF

Sum of Squares

Mean Square

F Value

Pr>F

Treatment A

1

71.58

71.58

4.81

0.0305

Treatment B

1

71.39

71.39

4.80

0.0308

Interaction A*B

1

61.02

61.02

4.10

0.0455

Baseline

1

637.45

637.45

42.81

<.0001

Error

105

1563.36

14.88

Total

109

2432.91

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