Table 3.
Known populations, source of data, back estimation of their population sizes, and the E/R ratio
| Reference group | Organization providing data | Real size (proportion) | E/R Ratio* | |
|---|---|---|---|---|
| Estimate | Ratio | |||
| Started primary school last year | Ministry of Education | 95544 (0.64%) | - | - |
| Graduated from high school last year | Ministry of Education | 55645 (0.37%) | 73289 | 1.3 |
| Took part in university entrance exam last year | Higher Education Organization | 96275 (0.65%) | 88547 | 0.9 |
| Started university last year | Higher Education Organization | 48600 (0.32%) | 38725 | 0.8 |
| Got married last year | Civil Status Registration Organization | 101488 (0.68%) | 73789 | 0.7 |
| Got divorced last year | Civil Status Registration Organization | 30403 (0.20%) | 19917 | 0.7 |
| Had normal vaginal delivery last year | Ministry of Health | 53112 (0.35%) | - | - |
| Had Cesarean section last year | Ministry of Health | 106275 (0.71%) | - | - |
| Have an office job in an elementary school | Ministry of Education | 37373 (0.25%) | 43829 | 1.2 |
| First name “Hamed” | Civil Status Registration Organization | 34059 (0.23%) | 55868 | 1.6 |
| First name “Abolfazl” | Civil Status Registration Organization | 63465 (0.42%) | 53705 | 0.8 |
| First name “Sara” | Civil Status Registration Organization | 47624 (0.32%) | 53871 | 1.1 |
| First name “Marjan” | Civil Status Registration Organization | 18958 (0.12%) | 32345 | 1.7 |
| Total | - | 1.2 | ||