Table 3.
Linear relationships of taste thresholds and dietary nutrient intakes (%DRI) of elderly participants investigated by correlation and regression analyses.
| Dietary Nutrients | Correlation Analysis (r) | Regression Analysis (β) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Sucrose RT | NaCl RT |
Caffeine RT |
Citric Acid RT | Umami RT | Sucrose RT | NaCl RT |
Caffeine RT |
Citric Acid RT | Umami RT | |
| Energy (% EER) | −0.182 | −0.174 | −0.166 | −0.255 * | −0.160 | −0.475 | −0.438 | −0.033 | −0.019 * | −0.099 |
| protein (% RNI) | −0.204 | −0.198 | −0.096 | −0.180 | −0.087 | −0.353 | −0.331 | −0.013 | −0.009 | −0.035 |
| Fiber (% AI) | −0.233 | −0.316 ** | −0.101 | −0.267 * | −0.191 | −0.447 | −0.585 ** | −0.015 | −0.014 * | −0.086 |
| Vitamin A (% RNI) | −0.195 | −0.209 | −0.048 | −0.156 | −0.046 | −0.416 | −0.433 | −0.008 | −0.009 | −0.023 |
| Vitamin C (% RNI) | −0.232 | −0.257 * | −0.009 | −0.241 * | −0.176 | −0.290 | −0.001 * | −0.001 | −0.008 * | −0.052 |
| Thiamin (% RNI) | −0.171 | −0.258 * | −0.113 | −0.266 * | −0.135 | −0.211 | −0.308 * | −0.011 | −0.009 * | −0.039 |
| Riboflavin (% RNI) | −0.192 | −0.240 * | −0.056 | −0.217 | −0.118 | −0.325 | −0.393 * | −0.007 | −0.010 | −0.047 |
| Niacin (% RNI) | −0.203 | −0.230 | −0.094 | −0.182 | −0.085 | −0.394 | −0.432 | −0.014 | −0.010 | −0.039 |
| Vitamin B6 (% RNI) | −0.114 | −0.154 | 0.022 | −0.058 | 0.034 | −0.093 | −0.122 | 0.001 | −0.001 | 0.007 |
| Folic acid (% RNI) | −0.196 | −0.225 | −0.040 | −0.231 | −0.128 | −0.275 | −0.307 | −0.004 | −0.009 | −0.043 |
| Vitamin B12 (% RNI) | −0.222 | −0.162 | −0.007 | −0.140 | −0.021 | −0.063 | −0.045 | 0.000 | −0.001 | −0.001 |
| Calcium (% RNI) | −0.219 | −0.141 | −0.027 | −0.175 | −0.088 | −0.463 | −0.288 | −0.004 | −0.010 | −0.044 |
| Phosphorus (% RNI) | −0.186 | −0.152 | −0.063 | −0.171 | −0.070 | −0.230 | −0.182 | −0.006 | −0.006 | −0.020 |
| Sodium (% RNI) | −0.172 | −0.204 | −0.041 | −0.117 | −0.025 | −0.094 | −0.107 | −0.002 | −0.002 | −0.003 |
| Iron (% RNI) | −0.226 | −0.300 * | −0.124 | −0.259 * | −0.160 | −0.224 | −0.288 * | −0.010 | −0.007 * | −0.037 |
| Zinc (% RNI) | −0.223 | −0.206 | −0.106 | −0.181 | −0.119 | −0.267 | −0.238 | −0.010 | −0.006 | −0.034 |
Correlation coefficient (r) and regression coefficient (β, β). * p < 0.05, ** p < 0.01. Using linear model (LM) regression analysis, taste threshold values were added to the dependent variable, and nutrients were added to the independent variables (covariates).