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Table 2 Hierarchical linear regression of suicide ideation on demographic, psychological and behavioural measures for the 2002 and 2008 samples presenting standardized regression coeffients (beta), significance values, and explained variance (R 2 )

From: Suicide and related health risk behaviours among school learners in South Africa: results from the 2002 and 2008 national youth risk behaviour surveys

 

Block 1

Block 2

Block 3

 

2002

2008

2002

2008

2002

2008

Block/Variables entered

Beta

Beta

Beta

Beta

Beta

Beta

Demographic measures

Age

.096**

.129**

.04*

.068**

.016

.039

Gender

.091**

.086**

.08**

.088**

.129**

.125**

Grade

-.038*

-.114**

-.020

-.082**

-.005

-.054*

School performance

-.004

-.026

.015

-.020

.02

-.012

Income father

-.005

-.005

.004

.006

-.005

.005

Income mother

-.010

.047*

-.003

.037

-.014

.022

Psychological measures

Feeling hopeless

  

.269**

.247**

.21**

.197**

Body dissatisfaction

  

-.006

-.047**

.008

-.025

Feeling unsafe

  

.12**

.11**

.067**

.050**

Risk behaviour measures

Violence

Carry a weapon

    

.024

.013

Involvement in physical fight

    

.032

.017

Violent behaviour-victim

    

.072**

.091**

Violent behaviour-actor

    

.081**

.086**

Substance use

Smoking

    

.036

.073**

Alcohol

    

.053**

.015

Marijuana

    

.046*

.038

Illegal drugs

    

.054**

.057**

Unsafe sex

    

.019

-.002

Unhealthy eating

    

.020

.030

Exercise

    

.009

-.009

Unsafe driving

Seatbelt use

    

-.005

.016

Drunk driving

    

.008

.019

R 2

  .013

  .016

  .103

  .098

 .150

 .146

R 2 change

  .013

  .016

  .091

  .082

 .047

 .048

F change

 11.019**

 12.512**

 171.412**

 136.628**

21.464**

19.647**

  1. *p<.01; **<.001.