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Health and Labour Force Participation WP 10/03

Appendix E

Appendix Table E1- Mean and standard deviations -
pooled regression models - self-rated health: 2002/03 to 2004/05
  Mean Standard deviation
Self-rated health (base=excellent)    
Very good 0.341 0.474
Good 0.196 0.397
Fair 0.055 0.229
Poor 0.015 0.123
Number of observations 39,310

Source: SoFIE Waves 1-3 Version 4, unweighted, Statistics New Zealand

Notes:

1. Based on original sample members with responses in all three waves who are aged over 15 at the end of the reference period in Wave 1. Full-time students and those 65 years of age and over are excluded. Data for all three waves is pooled together to create an average rate. The sample is restricted so it is the same as that considered in the models with individual chronic diseases (ie, those with missing indicators of chronic diseases are excluded from this analysis).

2. The means and standard deviations for the non-health variables are the same as those from the individual disease models (Table D2).

Appendix Table E2 - Estimated coefficients for labour force participation - pooled logistic regression model -
self-rated health: 2002/03 to 2004/05
  Coefficient Standard error P value 95% confidence intervals
        Lower Upper
Sex (base=male)          
Female -0.407*** 0.104 0.000 -0.611 -0.204
Region (base=Auckland)          
Waikato 0.163* 0.090 0.068 -0.012 0.339
Wellington 0.006 0.075 0.935 -0.141 0.153
Rest of North Island 0.013 0.068 0.843 -0.120 0.147
Canterbury 0.088 0.075 0.245 -0.060 0.236
Rest of South Island 0.007 0.078 0.927 -0.146 0.161
Born in New Zealand (base=yes)          
No -0.082 0.068 0.224 -0.215 0.050
Ethnicity (base=NZ/European)          
Māori -0.079 0.068 0.247 -0.212 0.054
Pacific Islander 0.064 0.108 0.555 -0.148 0.276
Other -0.062 0.100 0.536 -0.259 0.135
Age at interview date -0.097*** 0.005 0.000 -0.108 -0.087
Aged 50 and over (base=15-49)          
Aged 50 and over 6.922*** 0.671 0.000 5.607 8.238
Highest qualification (base=school qualification)          
Post-school vocational qualification 0.197*** 0.057 0.001 0.085 0.309
Degree or higher 0.757*** 0.078 0.000 0.605 0.910
No qualification -0.312*** 0.064 0.000 -0.437 -0.187
Self-rated health (base=excellent)          
Very good -0.064 0.045 0.156 -0.152 0.024
Good -0.578*** 0.052 0.000 -0.681 -0.475
Fair -1.440*** 0.078 0.000 -1.594 -1.287
Poor -2.545*** 0.135 0.000 -2.809 -2.280
Studying (base=no studying) -0.365*** 0.057 0.000 -0.477 -0.253
Other household income -0.012** 0.006 0.048 -0.023 0.000
Partner (base=working partner)          
Non-working partner -1.337*** 0.104 0.000 -1.540 -1.133
No partner -1.016*** 0.102 0.000 -1.217 -0.815
Children (base=no children)          
Child(ren) minimum age 0-<5 0.560*** 0.161 0.000 0.245 0.875
Child(ren) minimum age 5-17 -0.284*** 0.107 0.008 -0.494 -0.074
Years paid employment 0.178*** 0.009 0.000 0.160 0.195
Years paid employment squared -0.001*** 0.000 0.000 -0.001 -0.001
Unemployment rate -0.139*** 0.032 0.000 -0.201 -0.078
Interactions          
Female*Child(ren) minimum age 0-<5 -2.858*** 0.170 0.000 -3.191 -2.526
Female*Child(ren) minimum age 5-17 -0.209* 0.124 0.091 -0.451 0.033
Female*Non-working partner 0.082 0.149 0.581 -0.209 0.373
Female*No partner 0.434*** 0.115 0.000 0.209 0.660
Aged 50 and over*Age -0.139*** 0.013 0.000 -0.164 -0.114
Constant 4.945*** 0.227 0.000 4.500 5.389
Model summary statistics Coefficient
Number of observations 39,310
Number of unique respondents (clusters) 13,940
Chi-squared 3,749.79
Log-likelihood -12,691.30
Pseudo R2 0.3227

Source: SoFIE Waves 1-3 Version 4, unweighted, Statistics New Zealand

Notes:

1. Based on original sample members with responses in all three waves who are aged over 15 at the end of the reference period in Wave 1. Full-time students and those 65 years of age and over are excluded. Responses in each wave are included in the model separately. The relationship between person responses in each wave was accounted for by defining the people as clusters. The number of observations in each wave is not equal owing to the small number of missing values for variables of interest in certain waves or owing to student/retirement status changing between waves. All variables were included in the model and significant and insignificant variables or variable categories are kept in for completeness.

2. *Significant at the 90% level. **Significant at the 95% level. ***Significant at the 99% level.

3. The sample is restricted so it is the same as that considered in the models with individual chronic diseases (ie, those with missing indicators of chronic diseases are excluded from this analysis).

4. The likelihood of labour market participation was modelled. Not participating is the base category.

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