TABLE 4.
Weighted Spearman correlations between serum folate and CRP and AGP in PSC and nonpregnant WRA, BRINDA project1
| Serum folate and CRP correlation | Serum folate and AGP correlation | |||||
|---|---|---|---|---|---|---|
| Survey, year | n | r | P | n | r | P |
| PSC | ||||||
| Cambodia, 2014 | 646 | −0.05 | 0.319 | 646 | −0.21 | <0.001 |
| Cameroon, 2009 | 362 | 0.00 | 0.948 | 362 | −0.04 | 0.555 |
| Ecuador, 2012 | 2019 | 0.05 | 0.005 | — | — | |
| Mexico, 2006 | 940 | 0.01 | 0.845 | — | — | |
| Mexico, 2012 | 2496 | −0.04 | 0.246 | — | — | |
| Mongolia, 2006 | — | — | 228 | −0.07 | 0.292 | |
| USA, 2006 | 1267 | −0.06 | 0.100 | — | — | |
| Vietnam, 2010 | 174 | −0.06 | 0.506 | — | — | — |
| WRA | ||||||
| Azerbaijan, 2013 | 2551 | 0.07 | 0.008 | 2551 | 0.00 | 0.992 |
| Bangladesh, 2012 | 846 | −0.09 | 0.091 | 847 | −0.12 | 0.028 |
| Cambodia, 2014 | 699 | −0.07 | 0.198 | 699 | −0.12 | 0.032 |
| Cameroon, 2009 | 335 | −0.06 | 0.329 | 335 | 0.02 | 0.641 |
| Côte d'Ivoire, 2007 | 792 | −0.09 | 0.003 | 792 | 0.00 | 0.909 |
| Ecuador, 2012 | 8118 | −0.12 | <0.001 | — | — | |
| Georgia, 2009 | 407 | 0.08 | 0.088 | — | — | |
| Malawi, 2016 | 755 | −0.13 | 0.013 | 755 | −0.11 | 0.026 |
| Mexico, 2012 | 3608 | 0.03 | 0.242 | — | — | |
| Pakistan, 2011 | 7819 | 0.02 | 0.135 | 6481 | −0.04 | 0.017 |
| USA, 2006 | 3186 | −0.07 | 0.003 | — | — | |
| Vietnam, 2010 | 1345 | 0.02 | 0.402 | — | — | |
1
P value was calculated from a t test in a regression model that took into account complex sampling (cluster, strata, and sampling weight). Mongolia did not apply a complex survey design. AGP, α1-acid glycoprotein; BRINDA, Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia; CRP, C-reactive protein; PSC, preschool children; WRA, women of reproductive age.