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The average monthly income of participants regarding to demographics variables
| Variables | Frequency (%) | Month mean (USA $) | P value | |
|---|---|---|---|---|
| Sex | Male | 111 (55.5) | 866 | 0.001 |
| Female | 89 (44.5) | 508.5 | ||
| Age | <35 | 112 (56.0) | 667 | 0.112 |
| ≥35 | 88 (44.0) | 759 | ||
| Marital Status | Single | 93 (46.5) | 748 | 0.201 |
| Married | 107 (53.5) | 670.5 | ||
| Education | non-academics | 66 (33.0) | 519.5 | 0.001 |
| academics | 134 (67.0) | 799.5 | ||
