Table I.
Immunohistochemical staining for IDO and SOCS3 in chorionic villi and decidua from normal pregnancies.
| Y (Intensity of IDO immunostaining) | |||||
|---|---|---|---|---|---|
| X (intensity of SOCS3 immunostaining) | + | ++ | +++ | ++++ | Total |
| + | 2 | 5 | 5 | 1 | 13 |
| ++ | 5 | 6 | 0 | 0 | 11 |
| Total | 7 | 11 | 5 | 1 | 24 |
| Linear-By-linear association | 6.031 | ||||
| Asymp. Sig. (2-sided) | 0.014 | ||||
| Spearman's correlation | −0.511 | ||||
| Approx. Sig. | 0.011 | ||||
The results from linear-by-linear association are 6.031, which shows that there is a linear trend between IDO and SOCS3. The correlation coefficient calculated by Spearman's correlation is −0.511 (P=0.011), further explaining that they are negatively correlated.