Table 5.
ICD 9 Codes for broader class of diagnoses
| ICD 9 code | Diagnosis | Primary education | Above primary |
|---|---|---|---|
| Neoplasms | N = 122 | N = 699 | |
| 154 | Rectum cancer | 15%∗ | |
| 162 | Lung cancer | 10% | 6% |
| 174 | Breast cancer (female) | 7% | |
| 197 | Metastasis to respiratory and digestive systems | 8% | 14%∗ |
| 198 | Metastasis to kidney | 38% | 3%∗ |
| Circulatory diseases | N = 191 | N = 860 | |
| 410 | Acute myocardial infaction | 6% | 11% |
| 411 | Postmyorcardial infarction syndrome | 10% | 7% |
| 413 | Angina pectoris | 10% | 10% |
| 414 | Atherosclerosis | 19% | 22% |
| 427 | Atrial fibrillation | 10% | 9% |
| 428 | Heart failure | 6% | 3% |
| 454 | Varicose veins | 5% | |
| Respiratory diseases | N = 55 | N = 138 | |
| 473 | Chronic sinusitis | 7% | |
| 478 | Other diseases of upper respiratory tract | 14%∗ | |
| 486 | Pneumonia | 12% | |
| 491 | Chronic bronchitis | 16% | ∗ |
| 492 | Emphysema | 16% | ∗ |
| 496 | COPD (unspecified) | 20% | 14% |
| Diseases of the digestive system | N = 70 | N = 354 | |
| 550 | Inguinal hernia | 13% | 22% |
| 553 | Other hernia of abdominal cavity | 16% | 8%∗ |
| 562 | Diverticula of intestine | 5% | |
| 574 | Gallbladder | 16% | |
Note: Specific ICD 9 codes for the larger group of diagnoses. Note that because of privacy regulations, we are not allowed to reveal the percentages for which the cell count is less than 10. We did take these percentages into account when testing for significant differences. A star (*) indicates that the proportions differ significantly at 5% across the two groups.ICD, International Classification of Diseases.