Table 5.
Spearman’s coefficients of correlation between values of protein intake estimated from urinary biomarkers and protein intake estimated from BDHQ.
| Protein Estimated from Urinary Biomarkers (g/d) | |||
|---|---|---|---|
| All | Males | Females | |
| Protein from BDHQ | PRT24h (subjects who provided 24-h urine) | ||
| N = 58 | N = 21 | N = 37 | |
| Crude (g/d) | 0.239 | 0.325 | 0.247 |
| (0.075) | (0.164) | (0.148) | |
| Energy density (%E) | −0.028 | −0.097 | 0.189 |
| (0.833) | (0.682) | (0.229) | |
| PRTon (all subjects) | |||
| N = 248 | N = 118 | N = 130 | |
| Crude (g/d) | 0.205 | 0.247 | 0.124 |
| (0.001) | (0.008) | (0.161) | |
| Energy density (%E) | 0.204 | 0.302 | 0.109 |
| (0.001) | (0.001) | (0.218) | |
PRT24h, PRTon, and PRTbdhq (protein intake estimated from biomarkers measured in 24-h urine samples, biomarkers measured in overnight urine, and BDHQ15y, respectively). Spearman’s correlation coefficients were adjusted for age, MVPA, body weight, body height, and sex, if necessary, and corrected for attenuation.