| Level one variable | The secondary variables | Assignment |
| Dependent variable | Self-rated health | Bad is 1; general is 2; good is 3. |
| Demographic factors | Sex | Male is 1; female is 2. |
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| Census registry | Rural is 1; urban is 2. |
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| Age | Continuous variable |
| Chronic disease factors | Whether one is suffering from chronic diseases | No is 0; yes is 1. |
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| Whether one is suffering from high blood pressure | No is 0; yes is 1. |
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| Whether one is suffering from heart disease | No is 0; yes is 1. |
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| Whether one is suffering from arthritis | No is 0; yes is 1. |
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| Whether one is suffer from neck lumbar disease | No is 0; yes is 1. |
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| Whether one is suffering from chronic bronchitis | No is 0; yes is 1. |