Table 1.
Descriptive data for all women and women in the mammography, mail, and internet-based groups
| All women | Mammography group | Mail group | Internet-based group | ||
|---|---|---|---|---|---|
| n = 1120 | n = 400 | n = 438 | n = 282 | ||
| Median (IQR1) | Median (IQR1) | Median (IQR1) | Median (IQR1) | p value2 | |
| Age (years) | 61.0 (58.0–63.0) | 62.0 (60.0–64.0) | 60.0 (57.0–62.0) | 60.0 (57.0–62.0) | p < 0.001 |
| Weight (kg) | 68.0 (61.0–76.0) | 70.0 (62.0–78.0) | 67.0 (60.0–77.0) | 67.5 (61.0–75.0) | p = 0.044 |
| Height (cm) | 167.0 (163.0–170.0) | 166.0 (162.0–170.0) | 167.0 (163.0–171.0) | 167.0 (163.0–170.0) | p = 0.17 |
| Body mass index (BMI) (kg/m2) | 24.4 (22.1–27.3) | 24.9 (22.6–27.7) | 24.0 (21.7–27.1) | 24.1 (22.3–26.5) | p = 0.004 |
| n (%) | n (%) | n (%) | |||
| Previous fracture (yes) | 221 (19.7) | 82 (20.5) | 97 (22.1) | 42 (14.9) | p = 0.13 |
| Parent fractured hip (yes) | 230 (20.5) | 87 (21.8) | 81 (18.5) | 62 (22.0) | p = 0.49 |
| Current smoking (yes) | 89 (7.9) | 27 (6.8) | 37 (8.4) | 25 (8.9) | p = 0.64 |
| Glucocorticoids (yes) | 94 (8.4) | 40 (10.0) | 40 (9.1) | 14 (5.0) | p = 0.093 |
| Rheumatoid arthritis (yes) | 49 (8.4) | 22 (5.5) | 11 (2.5) | 16 (5.7) | p = 0.004 |
| Secondary osteoporosis (yes) | 75 (6.7) | 24 (6.0) | 40 (9.1) | 11 (3.9) | p = 0.022 |
| Alcohol 3 or more units per day (yes) | 24 (2.1) | 5 (1.3) | 15 (3.4) | 4 (1.4) | p = 0.086 |
1Interquartile range
2p value between mammography, mail, and internet-based groups