Table 1.
Characteristics of participants along the sampling procedure in the 2011/2012 survey
| All Ages | Women % (95% CI) | Mean age (95% CI) | Higher education % (95% CI) | <80 Years of age | Women % (95% CI) | Mean age (95% CI) | Higher education % (95% CI) | |
|---|---|---|---|---|---|---|---|---|
| Study population 2011 | 1924 | 51.0 (48.8–53.3) | 54.1a (53.3–54.9) | n.a. | 1757 | 50.2 (47.9–52.5) | 51.1a (50.4–51.9) | 73.8b (68.8–78.7) |
| Responders to ASQ | 1175 | 52.8 (49.0–54.7) | 56.6a (55.7–57.5) | 57.3c (54.4–60.1) | 1073 | 51.7 (48.7–54.7) | 53.9a (53.1–54.8) | 61.0d (58.1–64.0) |
| Available for OEGD | n.a. | n.a. | n.a. | n.a. | 947 | 52.0 (48.8–55.1) | 53.6 (52.6–54.5) | 61.8e (58.6–64.9) |
| OEGD participants 2012 | n.a. | n.a. | n.a. | n.a. | 388 | 52.1 (47.1–57.1) | 54.0 (52.7–55.4) | 62.7f (57.9–67.6) |
ASQ: Abdominal Symptom Questionnaire; CI: confidence interval; OEGD: oesophagogastroduodenoscopy; n.a.: data not available.
The proportion of women, mean age and (when applicable) proportion with higher education among the participants at four of the levels described in Figure 2 for all participants and for those <80 years old as that was an eligibility criterion for upper endoscopy. The statistical analysis are adjusted for age and gender.
a
p ≤ 0.01; bn = 305; cn = 1151; dn = 1052,; en = 931; fn = 381.