Table 1.

The relationship between S100A4 expression and the course of pleural tuberculosis

Course	Patients number	S100A4 expression comprehensive score				P value
		-	+	++	+++
<2 weeks	11	3	5	1	2	0.09a
2-8 weeks	13	0	1	7	5	0.01b
>8 weeks	6	0	6	0	0

^a:<2 weeks vs. 2-8 weeks; ^b: 2-8 weeks vs. >8 weeks. Both are calculated by rank-sum test.