|
Vaginal pH Level
|
N
|
Percent with LSIL
|
Odds of LSIL Cytologya (95% CI)
|
p-value
|
|---|
|
All Womenb
| | | | |
|
4.0-4.5
|
19,272
|
2.4
|
ref
|
< 0.01
|
|
5.0-5.5
|
9,059
|
2.5
|
1.3 (1.1-1.6)
| |
|
Age at Visit
| | | | |
|
< 25 years
| | | | |
|
4.0-4.5
|
1,536
|
4.0
|
ref
|
0.12
|
|
5.0-5.5
|
475
|
5.7
|
1.5 (0.9-2.3)
| |
|
25-34 years
| | | | |
|
4.0-4.5
|
6,178
|
2.9
|
ref
|
0.02
|
|
5.0-5.5
|
1,721
|
4.0
|
1.4 (1.0-1.9)
| |
|
35-44 years
| | | | |
|
4.0-4.5
|
6,074
|
2.3
|
ref
|
0.30
|
|
5.0-5.5
|
1,568
|
2.8
|
1.2 (0.9-1.7)
| |
|
45-54 years
| | | | |
|
4.0-4.5
|
3,216
|
1.9
|
ref
|
0.33
|
|
5.0-5.5
|
1,776
|
2.3
|
1.2 (0.8-1.8)
| |
|
55-64 years
| | | | |
|
4.0-4.5
|
1,308
|
1.3
|
ref
|
0.82
|
|
5.0-5.5
|
1,653
|
1.4
|
1.1 (0.6-1.9)
| |
|
65+ years
| | | | |
|
4.0-4.5
|
960
|
0.5
|
ref
|
0.04
|
|
5.0-5.5
|
1,866
|
1.4
|
2.7 (1.0-7.0)
| |
-
a Generalized estimating equation models with an independent correlation structure were used to estimate the odds of testing positive LSIL given dichotomous pH measurements at each visit
-
b Adjusted for age at visit
