Table 1.
Characteristics of study sample (n = 950) by T. gondii status.
| T. gondii IgG+a (n = 476) | T. gondii IgG− (n = 474) | Total (n = 950) | p-Valueb | |
|---|---|---|---|---|
| Age, mean ± SD | 59.1 ± 12.5 | 48.1 ± 16.8 | 53.6 ± 15.8 | p < 0.001 |
| Sex, n (%) | ||||
| Male | 243 (51.0) | 220 (46.4) | 463 (48.7) | p = 0.153 |
| Female | 233 (48.9) | 254 (53.6) | 487 (51.3) | |
| Education, n (%) | ||||
| Primary | 145 (30.5) | 86 (18.1) | 230 (24.3) | p < 0.001 |
| Secondary | 147 (30.9) | 137 (28.9) | 284 (29.9) | |
| University | 184 (38.6) | 251 (53.0) | 435 (45.8) | |
| BMIc, mean ± SD | 25.3 ± 4.0 | 24.3 ± 3.7 | 24.8 ± 3.9 | p < 0.001 |
| Phe:Tyrd, mean SD | 0.734 ± 0.31 | 0.821 ± 0.39 | 0.803 ± 0.57 | p < 0.001 |
IgG, immunoglobulin G serum antibody status, tested by ELISA.
a
Optical density ratio between the blood sample and a standard containing 10 international units of anti-Toxoplasma gondii IgG ≥ 0.8.
b
Statistical tests using t-test for continuous and χ2-test for categorical variables.
c
BMI, body mass index (kg/m2).
d
Phe:Tyr, ratio between plasma phenylalanine and tyrosine levels.