Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Percentage of participants with OBT estimated for N valid days. Values in brackets represent percentage of females.
| No. of days | 1 | 2 | 3 | 4 | 5 | 6 | 7 | Total |
|---|---|---|---|---|---|---|---|---|
| % of participants (% women) | 13% (54%) | 13% (52%) | 14% (51%) | 17% (51%) | 15% (49%) | 24% (51%) | 4% (43%) | 11180 (51%) |
