Table 1.

Life Table of the Cumulative Proportion of No. of Depression at End of Interval

	Interval Start Time	No. of Entering Interval	No. of Withdrawing During Interval	No. of Developing Depression	Cumulative Proportion Healthy at End of Interval	Hazard Rate
Total	0	758	0	0	1	0.00
	1	758	70	4	0.99	0.01
	2	684	17	88	0.86	0.14
	3	579	38	94	0.72	0.18
	4	447	398	49	0.58	0.22
Male	0	391	0	0	1	0.00
	1	391	35	3	0.99	0.01
	2	353	14	46	0.86	0.14
	3	293	18	50	0.71	0.19
	4	225	189	36	0.51	0.32
Female	0	367	0	0	1	0.00
	1	367	35	1	1	0.00
	2	331	3	42	0.87	0.14
	3	286	20	44	0.73	0.17
	4	222	209	13	0.65	0.12

Note: Wilcoxon statistic test show there is no significant difference between male and female students in cumulative proportion of healthy (x2=3.138, df=1, p=0.077).