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Table 2 The main model and model with interaction terms, rate ratios with 95 % confidence intervals comparing major occupational groups to the suicide rate in managers (the highest class group), 2001 to 2010

From: Occupational class differences in suicide: evidence of changes over time and during the global financial crisis in Australia

 

Main effects model

 

Interaction model

 

RR

95 % CI

p value

RR

95 % CI

p value

Managers

Reference

 

Reference

 

Professionals

174

1.50, 2.01

<0.001

1.37

1.02, 1.84

0.035

Tech/trade

2.30

1.99, 2.66

<0.001

1.14

0.82, 1.59

0.433

Comm service

1.80

1.54, 2.10

<0.001

1.03

0.76, 1.40

0.867

Clerical admin

1.25

1.06, 1.46

0.007

0.81

0.60, 1.09

0.159

Sales

1.62

1.38, 1.90

<0.001

0.92

0.67, 1.23

0.634

Machinery

2.27

1.94, 2.65

<0.001

2.07

1.22, 3.51

0.007

Labourers

3.62

3.13, 4.19

<0.001

1.60

1.15, 2.21

0.005

Farmers

2.55

2.11, 3.08

<0.001

2.32

1.34, 4.00

0.003

Year

0.96

0.90, 1.11

0.145

0.95

0.89, 1.01

0.076

Female

Reference

 

Reference

 

Male

3.87

3.58, 4.17

<0.001

2.19

1.62,2.94

<0.001

15–24 years

Reference

 

Reference

 

25–34 years

1.60

1.44, 1.77

<0.001

1.59

1.43, 1.76

<0.001

35–44 years

1.63

1.47, 1.80

<0.001

1.64

1.48, 1.81

<0.001

45–54 years

1.53

1.38, 1.70

<0.001

1.55

1.40, 1.71

<0.001

55–64 years

1.29

1.15, 1.45

<0.001

1.29

1.16, 1.45

<0.001

Managers*Females

   

Reference

 

Prof*Males

   

1.22

0.88, 1.71

0.237

Tech/trade*Males

   

2.31

1.61, 3.33

<0.001

Comm Service*Males

   

2.05

1.45, 2.91

<0.001

Clerical admin*Males

   

1.67

1.17, 2.37

0.581

Sales*Males

   

2.02

1.40, 2.92

<0.001

Machinery*Males

   

1.20

0.69, 2.07

0.523

Labourers*Males

   

2.73

1.90, 3.90

<0.001

Farmers*Males

   

1.18

0.66, 2.10

0.581

  1. Notes: 95 % CIs 95 % Confidence intervals (lower, upper); RR rate ratios; p value = significance value 95 %
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BMC Psychiatry

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