Table 1 Questionnaire response rates by age and gender
Age | Men % (95% CI) | Women % (95% CI) |
|---|---|---|
20 | 30.3 (27.4–33.3) | 43.6 (40.4–46.9) |
25 | 30.7 (27.8–33.8) | 46.3 (43.1–49.6) |
30 | 38.8 (36.5–41.0) | 49.0 (46.8–51.3) |
35 | 42.5 (40.2–44.7) | 52.7 (50.4–54.9) |
40 | 50.7 (48.4–52.9) | 57.8 (55.6–60.0) |
45 | 51.7 (49.5–54.0) | 57.0 (54.8–59.2) |
50 | 54.1 (51.8–56.3) | 63.1 (61.0–65.3) |
55 | 59.0 (56.8–61.2) | 64.3 (62.2–66.4) |
60 | 60.1 (57.9–62.3) | 64.3 (62.2–66.4) |
65 | 70.6 (67.7–73.4) | 67.8 (64.8–70.7) |
70 | 70.3 (67.3–73.1) | 64.1 (61.0–67.1) |
75 | 64.5 (61.4–67.4) | 55.7 (52.5–58.8) |
80 | 55.0 (51.8–58.2) | 44.4 (41.3–47.6) |
Overall response rate | 51.9 (51.2–52.6) | 57.0 (56.3–57.7) |