Copas et al developed a simple risk score for determining the risk of having antibodies to herpes simplex type 2 based on the patient's clinical history. The authors are from the Royal Free and University College London Medical School.
Parameter:
(1) gender
(2) age in years
(3) number of lifetime sexual partners
(4) genital blisters
|
Parameter |
Finding |
Points |
|
gender |
male |
0 |
|
|
female |
2 |
|
age in years |
<= 24 years |
0 |
|
|
25 - 29 |
1 |
|
|
>= 30 years |
2 |
|
number of lifetime sexual partners |
0 |
0 |
|
|
1 or 2 |
0 |
|
|
3 to 9 |
2 |
|
|
>= 10 |
3 |
|
genital blisters |
never |
0 |
|
|
once |
2 |
|
|
less than once per year |
3 |
|
|
1 to 3 times per year |
3 |
|
|
>= 4 times per year |
3 |
total score =
= SUM(points for all 4 parameters)
Interpretation:
• minimum score: 0
• maximum score: 10
• The higher the score the greater the risk of having serum antibodies to HSV type 2.
|
Total Score |
Risk Group |
Mean Prevalence HSV-2 |
|
<= 3 |
1 (very low) |
0.7% (0.7 to 4.8) |
|
4 |
2 (very low) |
2% (2.0 to 7.9) |
|
5 |
3 (low) |
6.2% (6.2 to 16) |
|
6 |
4 (moderate) |
14.1% (14.1 to 28.1) |
|
>= 7 |
5 (high) |
47.3% (47.1 to 67.7) |
where:
• The prevalence figures outside the parentheses in Table 3 are for blood donors. Other study groups showed higher risks in each risk group (range of values in parentheses).
Specialty: Infectious Diseases, Obstetrics & Gynecology, Urology, Otolaryngology
ICD-10: ,
