Table 3 Mortality hazard ratio (HR) estimates

MME

  < =50 MME

1

ref

 50 MME up to 90 MME

2.23 (2.01 to 2.46)

< 0.001

  > = 90 MME

2.37 (2.1 to 2.68)

< 0.001

Male vs Female

1.29 (1.27 to 1.31)

< 0.001

Age at 2010 (per year increase)

1.11 (1.10 to 1.12)

< 0.001

SES

 Very low

1

ref

 Low

0.81 (0.78 to 0.84)

< 0.001

 Medium

0.66 (0.63 to 0.68)

< 0.001

 High

0.58 (0.55 to 0.6)

< 0.001

 Very High

0.55 (0.52 to 0.57)

< 0.001

Any prescription of stimulant

1.23 (1.11 to 1.36)

< 0.001

Any prescription of benzodiazepine

1.18 (1.16 to 1.2)

< 0.001

Charlson score

  < =1

1

ref

 2 or 3

1.76 (1.71 to 1.81)

< 0.001

 4 or greater

3.57 (3.48 to 3.66)

< 0.001