Table 2.

Prevalence of WS at T1 and T2.

WS	T1		T2		p-Value
	Frequency	Percent (%)	Frequency	Percent (%)
0	30	40.5	29	39.2	p = 0.386
1	10	13.5	9	12.2
2	9	12.2	10	13.5
3	10	13.5	6	8.1
4	3	4.1	6	8.1
5	3	4.1	3	4.1
6	3	4.1	2	2.7
7	2	2.7	3	4.1
8	1	1.4	1	1.4
9	1	1.4	3	4.1
10	0	0	1	1.4
12	1	1.4	0	0
13	1	1.4	1	1.4
Total	74	100.0	74	100