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. 2011 Jul 21;65(2):108–112. doi: 10.1016/S0377-1237(09)80120-2

Table 4.

Comparison of serum serotonin levels (ng/ml)

Serotonin levels Mean Difference of mean t df Sig
Control ng/ml 80.87 7.12 0.72 39 p=.476
Before intervention ng/ml 73.75
After intervention ng/ml 127.92 54.17 3.07 39 p=0.004
Before intervention ng/ml 73.75