Table 2.

Test calculation (χ2 tests).

Group	2nd Day	3rd Day	4th Day	5th Day	7th Day	Total
Observed Frequency
Group A	55	25	10	0	0	90
group B	0	0	40	37	11	88
Total	55	25	50	37	11	178
Expected frequency
Group A	27.81	12.64	25.28	18.71	5.56	90
group B	27.19	12.36	24.72	18.29	5.44	88
Total	55	25	50	37	11	178
df	4
p	1.47E-30
α	0.05