Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Demographic characteristics of the participants.
| Characteristics | TG | CG | t/χ 2 value | P value | |
|---|---|---|---|---|---|
| Gender (n) | Male | 39 | 31 | 0.05 | 0.82 |
| Female | 74 | 63 | |||
| Age (years) | 44.0 ± 10.45 | 39.3 ± 9.36 | 1.43 | 0.15 | |
| Education (years) | ≥8 | 38 | 33 | 0.83 | 0.84 |
| ≥11 | 45 | 41 | |||
| ≥14 | 25 | 17 | |||
| ≥16 | 5 | 3 | |||
| Tea drinking | 0 | 0 | — | — | |
| Coffee drinking | 0 | 0 | — | — | |
| Alcohol drinking | 0 | 0 | — | — | |
| Cigarette smoking | 0 | 0 | — | — | |
TG: the treatment group; CG: the control group.
