TABLE 3.

Duration distribution.

Lifetime	Frequency number	Frequency (%)
0–7 days	40	32.00%
8–50 days	47	39.50%
51–100 days	15	12.61%
101–50 days	8	6.72%
151–200 days	4	3.36%
More than 200 days	11	9.24%