Table 2 Association between 2 levels of medication adherence and self-inflicted violence behaviors during follow-up period (for hypothesis 1)

Suicide

Hazard ratio (95% CI)^a

Ref

0.527 (0.447, 0.620)

< 0.001

Restricted mean survival time at 2738 days (95% CI)

 Difference—days

Ref

5.452 (3.767, 7.137)

< 0.001

 Ratio

Ref

1.002 (1.001, 1.003)

< 0.001

Suicide attempt

Hazard ratio (95% CI)^a

Ref

1.003 (0.882, 1.140)

0.960

Restricted mean survival time at 2570 days (95% CI)

 Difference—days

Ref

 − 0.708 (− 2.615, 1.206)

0.470

 Ratio

Ref

1.000 (0.999, 1.001)

0.470

NSSI

Hazard ratio (95% CI)^a

Ref

1.229 (1.088, 1.388)

< 0.001

Restricted mean survival time at 2570 days (95% CI)

 Difference—days

Ref

 − 4.643 (− 6.700, − 2.587)

< 0.001

 Ratio

Ref

0.998 (0.997, 0.999)

< 0.001