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The demographic characteristics of the three groups HBM, ECO and control.
| Demographic characteristics | HBM | ECO | Control |
|---|---|---|---|
| Mean age | 36.79(8) | 33.76(5.24) | 36.4(9) |
| Education level Under diploma Diploma Higher than diploma |
40(50) 24(30) 16(20) |
0 4(5) 76(95) |
36(45) 20(25) 24(30) |
| Married status Married Other (single, widowed, divorced) |
11(13.8) 69(86.2) |
16(20) 64(80) |
7(8.8) 73(91.3) |
