Table 4.
Fractures observed Among 690 Olmsted County, MN Females Following a Childhood Distal Forearm Fracture in 1935–1992 Compared With the Numbers Expected and SIRs, With 95% CIs
| Fracture type and attained age | Women
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Age at forearm fracture
| ||||||||||
| Total
|
<9 years
|
9–11 years
|
12–14 years
|
15–18 years
|
||||||
| Obsa | SIR (95% CI) | Obsa | SIR (95% CI) | Obsa | SIR (95% CI) | Obsa | SIR (95% CI) | Obsa | SIR (95% CI) | |
| All ages ≥35 years | 690 | 283 | 240 | 107 | 60 | |||||
| Any fracture | 122 | 0.8 (0.7–0.98) | 53 | 0.9 (0.7–1.2) | 45 | 1.0 (0.8–1.4) | 15 | 0.5 (0.3–0.8) | 9 | 0.6 (0.2–1.04) |
| Fragility fracture | 74 | 1.0 (0.8–1.2) | 32 | 1.1 (0.7–1.5) | 28 | 1.3 (0.9–1.9) | 9 | 0.6 (0.3–1.1) | 5 | 0.6 (0.2–1.3) |
| Major osteoporotic fracture | 37 | 1.1 (0.8–1.6) | 16 | 1.3 (0.7–2.1) | 12 | 1.3 (0.7–2.3) | 7 | 1.0 (0.4–2.0) | 2 | 0.5 (0.1–1.8) |
| Other fragility fracture | 52 | 1.0 (0.8–1.4) | 23 | 1.2 (0.7–1.7) | 22 | 1.5 (0.96–2.3) | 4 | 0.4 (0.1–0.99) | 3 | 0.5 (0.1–1.6) |
| Severe trauma fracture | 64 | 0.8 (0.6–0.98) | 29 | 0.9 (0.6–1.2) | 22 | 0.9 (0.5–1.3) | 8 | 0.5 (0.2–1.02) | 5 | 0.6 (0.2–1.3) |
| Pathologic fracture | 5 | 1.2 (0.4–2.8) | 2 | 1.5 (0.2–5.5) | 3 | 2.6 (0.5–7.6) | 0 | 0.0 (0.0–3.4) | 0 | 0.0 (0.0–6.5) |
| All ages 35–49 years | 690 | 283 | 240 | 107 | 60 | |||||
| Any fracture | 85 | 0.9 (0.7–1.1) | 39 | 1.0 (0.7–1.4) | 33 | 1.1 (0.7–1.5) | 6 | 0.4 (0.1–0.8) | 7 | 0.8 (0.3–1.6) |
| Fragility fracture | 45 | 1.2 (0.8–1.6) | 22 | 1.4 (0.9–2.2) | 17 | 1.4 (0.8–2.2) | 2 | 0.3 (0.04–1.1) | 4 | 1.1 (0.3–2.8) |
| Major osteoporotic fracture | 15 | 1.3 (0.8–2.2) | 6 | 1.3 (0.5–2.8) | 6 | 1.7 (0.6–3.7) | 1 | 0.5 (0.01–2.8) | 2 | 1.8 (0.2–6.3) |
| Other fragility fracture | 35 | 1.2 (0.9–1.7) | 19 | 1.6 (1.0–2.6) | 13 | 1.4 (0.8–2.4) | 1 | 0.2 (0.01–1.1) | 2 | 0.7 (0.1–2.6) |
| Severe trauma fracture | 45 | 0.7 (0.5–0.99) | 19 | 0.8 (0.5–1.2) | 18 | 0.9 (0.6–1.5) | 4 | 0.4 (0.1–0.97) | 4 | 0.7 (0.2–1.7) |
| Pathologic fracture | 3 | 1.0 (0.2–2.8) | 1 | 0.9 (0.02–4.9) | 2 | 2.1 (0.3–7.7) | 0 | 0.0 (0.0–5.7) | 0 | 0.0 (0.0–8.6) |
| Age ≥50 years | 292 | 119 | 87 | 50 | 36 | |||||
| Any fracture | 50 | 0.9 (0.7–1.2) | 20 | 0.9 (0.6–1.4) | 17 | 1.2 (0.7–1.9) | 10 | 0.8 (0.4–1.4) | 3 | 0.4 (0.1–1.1) |
| Fragility fracture | 36 | 0.9 (0.6–1.3) | 13 | 0.8 (0.4–1.4) | 13 | 1.4 (0.7–2.4) | 8 | 0.9 (0.4–1.7) | 2 | 0.4 (0.1–1.3) |
| Major osteoporotic fracture | 25 | 1.2 (0.7–1.7) | 11 | 1.4 (0.7–2.4) | 8 | 1.4 (0.6–2.8) | 6 | 1.2 (0.4–2.5) | 0 | 0.0 (0.0–1.3) |
| Other fragility fracture | 22 | 1.0 (0.6–1.5) | 6 | 0.7 (0.2–1.5) | 10 | 1.9 (0.9–3.5) | 4 | 0.8 (0.2–1.9) | 2 | 0.7 (0.1–2.6) |
| Severe trauma fracture | 23 | 1.0 (0.6–1.5) | 12 | 1.3 (0.7–2.3) | 6 | 0.9 (0.3–2.0) | 4 | 0.8 (0.2–2.1) | 1 | 0.3 (0.01–1.9) |
| Pathologic fracture | 2 | 2.1 (0.2–7.5) | 1 | 5.7 (0.1–32) | 1 | 4.7 (0.1–26) | 0 | 0.0 (0.0–8.5) | 0 | 0.0 (0.0–27) |
Results are shown for all and by age group at the initial distal forearm fracture.
Obs = number observed; SIR = standardized incidence ratio; CI = confidence interval.
a
Note that the number of fractures observed may differ from those reported in Table 2 because only the first fracture of each type [within a time frame] per patient was counted in these analyses.