From: The association between dietary acid load and risk of gallstone: a case-control study
 | PRAL (mEq/day) | NEAP (mEq/day) | ||||||
---|---|---|---|---|---|---|---|---|
Tertile 1 (n = 177) | Tertile 2 (n = 177) | Tertile 3 (n = 177) | P value | Tertile 1 (n = 177) | Tertile 2 (n = 177) | Tertile 3 (n = 177) | P value | |
Calorie (Kcal/d) | 2357 ± 561 | 2216 ± 567 | 2524 ± 709 | < 0.001 | 2367 ± 584 | 2305 ± 560 | 2419 ± 721 | 0.244 |
Carbohydrate (g/d) | 306 ± 90 | 275 ± 86 | 313 ± 119 | 0.001 | 305 ± 92 | 295 ± 97 | 293 ± 112 | 0.469 |
Protein (g/d) | 70 ± 19 | 70 ± 20 | 83 ± 26 | < 0.001 | 70 ± 19 | 76 ± 22 | 77 ± 26 | 0.005 |
Fat (g/d) | 110 ± 41 | 102 ± 38 | 117 ± 42 | 0.003 | 110 ± 40 | 109 ± 43 | 111 ± 38 | 0.955 |
Phosphorous (mg/d) | 1322 ± 414 | 1265 ± 385 | 1467 ± 559 | < 0.001 | 1348 ± 422 | 1398 ± 472 | 1308 ± 498 | 0.193 |
Potassium (mg/d) | 3982 ± 1067 | 3172 ± 879 | 3064 ± 1127 | < 0.001 | 3992 ± 1068 | 3466 ± 964 | 2769 ± 929 | < 0.001 |
Calcium (mg/d) | 918 ± 303 | 850 ± 306 | 862 ± 335 | 0.095 | 935 ± 304 | 903 ± 298 | 793 ± 328 | < 0.001 |
Magnesium (mg/d) | 382 ± 119 | 334 ± 108 | 369 ± 154 | 0.001 | 385 ± 124 | 368 ± 122 | 331 ± 137 | < 0.001 |
Food groups | ||||||||
Grains (g/d) | 334 ± 158 | 372 ± 181 | 476 ± 276 | < 0.001 | 340 ± 163 | 375 ± 166 | 466 ± 287 | < 0.001 |
Whole grains (g/d) | 37 ± 44 | 40 ± 48 | 45 ± 68 | 0.304 | 38 ± 46 | 40 ± 49 | 43 ± 65 | 0.620 |
Refined grains (g/d) | 281 ± 156 | 315 ± 173 | 412 ± 273 | < 0.001 | 284 ± 159 | 317 ± 163 | 407 ± 280 | < 0.001 |
Fruits (g/d) | 506 ± 281 | 355 ± 194 | 293 ± 195 | < 0.001 | 502 ± 283 | 359 ± 199 | 293 ± 84 | < 0.001 |
Vegetables (g/d) | 416 ± 234 | 325 ± 191 | 277 ± 187 | < 0.001 | 407 ± 236 | 355 ± 216 | 258 ± 150 | < 0.001 |
Red meat (g/d) | 26 ± 22 | 27 ± 34 | 29 ± 30 | 0.711 | 27 ± 22 | 27 ± 29 | 29 ± 34 | 0.791 |
Dairy products (g/d) | 317 ± 212 | 296 ± 259 | 312 ± 219 | 0.673 | 320 ± 214 | 304 ± 193 | 300 ± 277 | 0.689 |
Legumes and nuts (g/d) | 72 ± 48 | 65 ± 47 | 64 ± 48 | 0.208 | 72 ± 46 | 69 ± 47 | 60 ± 45 | 0.044 |
protein to potassium ratio | 0.69 ± 0.09 | 0.86 ± 0.07 | 1.15 ± 0.27 | < 0.001 | 0.69 ± 0.09 | 0.87 ± 0.06 | 1.15 ± 0.27 | < 0.001 |
Animal protein to potassium ratio | 0.36 ± 0.14 | 0.49 ± 0.4 | 0.62 ± 0.31 | < 0.001 | 0.36 ± 0.15 | 0.45 ± 0.17 | 0.66 ± 0.45 | < 0.001 |
Plant protein to potassium ratio | 0.35 ± 0.14 | 0.43 ± 0.25 | 0.50 ± 0.23 | < 0.001 | 0.35 ± 0.14 | 0.39 ± 0.17 | 0.53 ± 0.28 | < 0.001 |