The following table was presented in an article summarizing a study to compare a new drug to a standard drug and to a placebo.
Characteristic*
New Drug
Standard Drug
Placebo
p
Age, years
45.2 (4.8)
44.9 (5.1)
42.8 (4.3)
0.5746
% Female
51%
55%
57%
0.0635
Annual Income, $000s
59.5 (14.3)
63.8 (16.9)
58.2 (13.6)
0.4635
% with Insurance
87%
65%
82%
0.0352
Disease Stage
0.1261
Stage I
35%
18%
33%
Stage II
42%
37%
47%
Stage III
23%
20%
*Table entries and Mean (SD) or %
Are there any statistically significant differences in the characteristics shown among the treatments? Justify your answer
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