Volume 15, Number 2—February 2009
Research
Medical Procedures and Risk for Sporadic Creutzfeldt-Jakob Disease, Japan, 1999–2008
Table 4
Medical procedures and risk for sCJD, by age at disease onset, Japan, 1999–2008*
Age range, y | Data category | Total no. patients | Any surgery | Neurosurgery | Ophthalmic surgery | Other surgery | Blood transfusion |
---|---|---|---|---|---|---|---|
31–50 |
sCJD | 32 | 50.0% | 6.3% | 6.3% | 40.6% | 3.1% |
Control | 37 | 45.9% | 10.8% | 2.7% | 37.8% | 5.4% | |
OR | 1.66 | 0.38 | 2.15 | 0.78 | 0.64 | ||
95% CI | 0.04–74.09 | 0.02–6.64 | 0.05–101.51 | 0.02 – 33.39 | 0.05–9.09 | ||
p value |
0.79 |
0.50 |
0.70 |
0.90 |
0.74 |
||
51–70 |
sCJD | 414 | 43.7% | 1.7% | 2.2% | 41.8% | 9.4% |
Control | 97 | 46.4% | 5.2% | 3.1% | 40.2% | 11.3% | |
OR | 0.18 | 0.69 | 2.71 | 5.57 | 0.84 | ||
95% CI | 0.02–1.73 | 0.13–3.62 | 0.24–30.38 | 0.62–50.05 | 0.40–1.77 | ||
p value |
0.14 |
0.66 |
0.42 |
0.13 |
0.64 |
||
>71 | sCJD | 317 | 57.0% | 5.2% | 10.1% | 49.2% | 12.4% |
Control | 60 | 65.0% | 6.7% | 10.0% | 56.7% | 11.7% | |
OR | 0.81 | 0.76 | 1.15 | 0.83 | 1.27 | ||
95% CI | 0.15–4.37 | 0.15–3.80 | 0.38–3.48 | 0.17–4.02 | 0.52–3.10 | ||
p value | 0.80 | 0.74 | 0.81 | 0.82 | 0.60 |
*sCJD, sporadic Creutzfeldt-Jakob disease; OR, odds ratio; CI, confidence interval.