History of comorbid conditions, alcohol consumption, and other dietary factors at time of enrollment by the prophylaxis group. P values are from the chi-square test of association, except where indicated with an asterisk. Values are n (%) unless otherwise specified.
| Variables | Receiving Prophylaxis, N = 441 | Not Receiving Prophylaxis, N = 608 | p |
|---|---|---|---|
| Comorbid conditions | |||
| History of DM, No | 441 | 608 | |
| n (%) | 89 (20.2) | 114 (18.8) | 0.562 |
| History of CVD, No | 441 | 608 | |
| At least 1 of the following | 67 (15.2) | 94 (15.5) | 0.905 |
| Acute coronary syndrome | 3 (0.7) | 8 (1.3) | 0.374* |
| Coronary artery disease | 48 (10.9) | 69 (11.4) | 0.843 |
| Congestive heart failure | 15 (3.4) | 23 (3.8) | 0.867 |
| Myocardial infarction | 15 (3.4) | 29 (4.8) | 0.275 |
| Peripheral arterial disease | 6 (1.4) | 6 (1.0) | 0.573* |
| History of HTN, No | 441 | 608 | 0.213 |
| n (%) | 285 (64.6) | 370 (60.1) | |
| History of kidney disease, No | 441 | 608 | |
| n (%) | 29 (6.6) | 36 (5.9) | 0.664 |
| History of nephrolithiasis, No | 441 | 608 | |
| n (%) | 23 (5.2) | 37 (6.1) | 0.549 |
| Alcohol consumption, daily | |||
| Beer, drinks, No | 424 | 578 | |
| 0 | 284 (67.0) | 373 (64.5) | |
| 1–2 | 67 (15.8) | 85 (14.7) | |
| 3+ | 73 (17.2) | 120 (20.8) | 0.366 |
| Wine, glasses, No | 417 | 575 | |
| 0 | 309 (74.1) | 422 (73.4) | |
| 1–2 | 58 (13.9) | 99 (17.2) | |
| 3+ | 50 (12.0) | 54 (9.4) | 0.197 |
| Hard liquor, drinks, No | 409 | 569 | |
| 0 | 324 (79.2) | 461 (81.0) | |
| 1–2 | 36 (8.8) | 60 (10.5) | |
| 3+ | 49 (12.0) | 48 (8.4) | 0.146 |
↵* P values from Fisher’s exact test. N: total number of patients; No: number of patients with available data for each characteristic; n: number of patients with attribute out of No; %: percent of n out of No; DM: diabetes mellitus; CVD: cardiovascular disease; HTN: hypertension.