Table 3.
Comparison of Prevotella-enterotype and Bacteroides-enterotype in the LL, NL, and HL of the five whole blood trace elements among infertile group.
| Trace Element | Status | Concentration (µmol/L) |
P-Enterotype (N) |
B-Enterotype (N) |
χ2 | P Value |
|---|---|---|---|---|---|---|
| Cu | LL | <9.25 | 15 | 8 | 3.300 | 0.187 |
| NL | 9.25–21.21 | 193 | 228 | |||
| HL | >21.21 | 12 | 13 | |||
| Zn | LL | <74.66 | 11 | 12 | 5.420 | 0.063 |
| NL | 74.66-111.17 | 204 | 220 | |||
| HL | >111.17 | 5 | 17 | |||
| Ca | LL | <1.42 | 6 | 9 | 3.168 | 0.186 |
| NL | 1.42–1.90 | 202 | 234 | |||
| HL | >1.90 | 12 | 6 | |||
| Mg | LL | <1.25 | 6 | 6 | 4.048 | 0.140 |
| NL | 1.25-1.70 | 209 | 228 | |||
| HL | >1.70 | 5 | 15 | |||
| Fe | LL | <7.37 | 14 | 9 | 13.309 | 0.001 |
| NL | 7.37–9.60 | 203 | 220 | |||
| HL | >9.60 | 3 | 20 |
P-enterotype, Prevotella-enterotype; B-enterotype, Bacteroides-enterotype; Cu, copper; Zn, zinc; Ca, calcium; Mg, magnesium; Fe, iron; LL, low level group; NL, normal level group; HL, high level group. The Chi-square test and Fisher’s exact test were used to compare categorical variables.