Table 4 Cox proportional hazard survival analysis for time to self-harm repetition from first presentation occurred during 2010–2013 – Multivariate Analysis

 Adolescents

1

1

 Children

1.28 (0.73–2.21)

ns

1.24 (0.92–1.67)

ns

 Younger emerging adults

0.97 (0.75–1.24)

ns

0.73 (0.58–0.93)

0.01

 Older emerging adults

1.03 (0.81–1.32)

ns

0.89 (0.67–1.18)

ns

 Drug overdose only

1

1

 Self-cutting only

1.29 (0.98–1.69)

0.07

1.59 (1.23–2.05)

<0.001

 Overdose & self-cutting

1.04 (0.67–1.61)

ns

2.09 (1.49–2.93)

<0.001

 Attempted hanging only

0.94 (0.63–1.41)

ns

1.14 (0.61–2.15)

ns

 Attempted drowning only

1.31 (0.66–2.59)

ns

0.89 (0.38–2.11)

ns

 Other

1.16 (0.88–1.54)

ns

1.47 (1.11–1.97)

0.009

 None

1

1

 One

2.67 (2.11–3.38)

<0.001

2.11 (1.65–2.7)

<0.001

 Two

3.13 (2.27–4.31)

<0.001

5.23 (3.91–6.99)

<0.001

 Three

5.21 (3.65–7.42)

<0.001

6.63 (4.81–9.17)

<0.001

 Four

4.97 (3.01–8.21)

<0.001

6.95 (4.53–10.67)

<0.001

 Five

4.73 (2.47–9.06)

<0.001

9.43 (5.59–15.88)

<0.001

 General admission

1

1

 Psychiatric admission

0.91 (0.61–1.39)

ns

1.21 (0.78–1.88)

ns

 Refused to be admitted

1.07 (0.49–2.31)

ns

0.59 (0.15–2.23)

ns

 Left before admission

1.00 (0.68–1.46)

ns

1.48 (0.98–2.23)

0.06

 Not admitted

0.89 (0.67–1.18)

ns

1.20 (0.93–1.54)

ns

 Left without being seen

1.47 (0.89–2.42)

ns

1.21 (0.66–2.24)

ns

 Yes

1

1

 No

0.81 (0.64–1.01)

0.06

0.78 (0.61–1.01)

0.05