Table 1.
Characteristics of study groups
| |
GERD Group (physician-assigned) |
Population controls without GERD
1
|
|---|---|---|
| Number or Mean (% or standard deviation) | Number or Mean (% or standard deviation) | |
| Number of subjects |
308 |
182 |
| Age (years) |
|
|
| 20-39 |
11 (4) |
9 (5) |
| 40-59 |
111 (36) |
63 (35) |
| 60-79 |
186 (60) |
110 (60) |
| Race/Ethnicity |
|
|
| White |
247 (80) |
154 (84) |
| Black |
20 (6) |
10 (5) |
| Hispanic |
20 (6) |
7 (4) |
| Asian |
8 (3) |
5 (3) |
| Others/Missing/Unknown |
13 (4) |
6 (3) |
| Male |
211 (69) |
123 (68) |
| GERD symptoms |
|
|
| Severity2 |
|
|
| Severe & very severe |
124 (40) |
-- |
| Moderate |
109 (35) |
-- |
| Mild |
75 (25) |
-- |
| Frequency |
|
|
| Daily |
78 (25) |
-- |
| Several times a week |
89 (29) |
-- |
| Once month – once a week |
91 (30) |
-- |
| Less than once a month |
50 (16) |
-- |
| BMI |
28.9 (5.2) |
28.3 (5.5) |
| Smoking |
|
|
| Current smoker |
30 (10) |
19 (10) |
| Portion size |
|
|
| % extra large or large | 27.9 (16.3) | 28.8 (17.2) |
1Self-reported heartburn or acid reflux <1/month.
2Severity with at least monthly or less than once a month frequency.