Table 1.

Kaplan-Meier analysis of the cumulative risk of suicide attempts in 13 years of tracking stratified by insomnia with log-rank test

Insomnia	With (N = 159,989)	Without (N = 319,979)	P-value
X-year(s) of suicide attempts	Numbers of suicide attempts
1	285	101	< 0.001
2	525	157	< 0.001
3	700	195	< 0.001
4	808	222	< 0.001
5	890	248	< 0.001
6	965	265	< 0.001
7	1020	276	< 0.001
8	1052	286	0.001
9	1070	295	< 0.001
10	1084	296	< 0.001
11	1198	297	< 0.001
12	1198	297	< 0.001
13	1198	297	< 0.001