Table 2 Hazard ratios (HR) with 95% confidence intervals (CI) of adolescent first-time self-harm by parental education and household income

1.37 (1.22–1.55)

1.37 (1.21–1.54)

1.12 (0.99–1.24)

1.39 (1.07–1.82)

1.24 (0.94–1.63)

1.23 (0.92–1.64)

1.33 (1.23–1.43)

1.29 (1.20–1.39)

1.18 (1.09–1.27)

1.13 (0.94–1.36)

1.09 (0.90–1.31)

1.08 (0.89–1.30)

1.00 (REF)

1.00 (REF)

1.00 (REF)

1.00 (REF)

1.00 (REF)

1.00 (REF)

1.15 (1.02–1.29)

1.20 (1.07–1.36)

1.13 (1.00–1.27)

1.04 (0.78–1.38)

0.96 (0.71–1.29)

0.97 (0.72–1.31)

1.37 (1.22–1.53)

1.34 (1.20–1.50)

1.20 (1.07–1.34)

1.08 (0.82–1.41)

1.00 (0.76–1.32)

0.99 (0.75–1.30)

1.32 (1.18–1.47)

1.30 (1.16–1.45)

1.18 (1.05–1.32)

1.01 (0.77–1.34)

0.99 (0.75–1.32)

0.98 (0.74–1.30)

1.15 (1.03–1.29)

1.14 (1.01–1.27)

1.07 (0.96–1.21)

0.90 (0.67–1.21)

0.87 (0.65–1.18)

0.86 (0.64–1.16)

1.00 (REF)

1.00 (REF)

1.00 (REF)

1.00 (REF)

1.00 (REF)

1.00 (REF)