Baseline characteristics of participants who completed a gastro-oesophageal reflux disease (GORD) and dietary questionnaires (total = 371) shown as a comparison between those with at least weekly GORD symptoms and the rest of participants with no or infrequent GORD symptoms
| Frequent GORD (%) (n = 103) | Rest (%) (n = 268) | p Value | Any oesophageal erosion (%) (n = 40) | No oesophageal erosion (%) (n = 124) | p Value | |
|---|---|---|---|---|---|---|
| *Defined as watching TV less than three hours a day. | ||||||
| †Defined as the use of any vitamin or mineral supplement at least once a week over the past one year. | ||||||
| Age (y) | ||||||
| Mean (SD) | 44.5 (11.3) | 44 (10.5) | 0.600 | 46.5 (10.8) | 44 (10.0) | 0.164 |
| <35 | 19 (18.4) | 60 (22.4) | 0.904 | 4 (10.0) | 30 (24.2) | 0.173 |
| 35–44 | 29 (28.2) | 78 (29.1) | 13 (32.5) | 31 (25.0) | ||
| 45–54 | 30 (29.1) | 84 (31.3) | 11 (27.5) | 44 (35.5) | ||
| ⩾55 | 18 (17.5) | 43 (16.0) | 10 (25.0) | 17 (13.7) | ||
| Unknown | 7 (6.8) | 3 (1.1) | 2 (5.0) | 2 (1.6) | ||
| Sex | ||||||
| Men | 27 (26.2) | 84 (31.3) | 0.376 | 14 (35.0) | 44 (35.5) | |
| Women | 76 (73.8) | 184 (68.7) | 26 (65.0) | 80 (64.5) | ||
| Race/ethnicity | ||||||
| Asian | 8 (7.8) | 37 (13.8) | 0.602 | 1 (2.5) | 15 (12.1) | 0.034 |
| African American | 47 (45.6) | 112 (41.8) | 15 (37.5) | 64 (51.6) | ||
| Hispanic | 9 (8.7) | 21 (7.8) | 3 (7.5) | 7 (5.6) | ||
| White | 36 (35.0) | 91 (34.0) | 20 (50.0) | 32 (25.9) | ||
| Other | 3 (2.9) | 7 (2.6) | 7 (17.5) | 6 (4.8) | ||
| Tobacco smoking | ||||||
| Never smoker | 87 (84.5) | 224 (83.6) | 0.739 | 31 (77.5) | 108 (87.1) | 0.242 |
| Current smoker | 13 (12.6) | 40 (14.9) | 2 (5.0) | 13 (10.5) | ||
| Unknown | 3 (2.9) | 4 (1.5) | 7 (17.5) | 3 (2.4) | ||
| Education | ||||||
| High school | 7 (6.8) | 13 (4.9) | 0.173 | 1 (2.5) | 6 (4.8) | 0.333 |
| Some college | 25 (24.3) | 93 (34.7) | 12 (30.0) | 44 (35.5) | ||
| College | 27 (26.2) | 126 (47.0) | 12 (30.0) | 46 (37.1) | ||
| Unknown | 44 (42.7) | 36 (13.4) | 15 (37.5) | 28 (22.6) | ||
| Physical activity* | ||||||
| Active | 15 (14.6) | 32 (11.9) | 0.409 | 5 (12.5) | 19 (15.3) | 0.800 |
| Inactive | 88 (85.4) | 236 (88.1) | 35 (87.5) | 105 (84.7) | ||
| Vitamin/mineral supplement use† | ||||||
| Yes | 64 (62.1) | 150 (56.0) | 0.293 | 26 (65.0) | 71 (57.3) | 0.461 |
| No | 39 (37.9) | 118 (44.0) | 14 (35.0) | 53 (42.7) | ||