Table 1

Regional estimates of duration of risk behaviour for FSW by the method of calculation

RegionDuration of risk behaviour for female sex workers
First method of calculation: based on time from beginning of sex work until death or cessationSecond method of calculation: based on percentage of FSW who started selling sex in the last yearThird method of calculation: based on the median/mean time spent in sex work up to the moment of the study*
AfricaNA5.5 (4)†5.5 (43)
AsiaNA2.9 (12)†2.8–4.0 (31)
North America (studies conducted in the USA)NANA10.2–11.0 (3)†
EuropeNANA8.4–10.0 (10)†
Latin America (studies conducted in Mexico, Brazil and Peru)NANA11.2–12.0 (6)†
  • (1) In parenthesis, number of datasets used for calculation.

  • *Considering the median equals mean (primarily the median and, in its absence, the mean).

  • †Best estimate for the population.

  • NA, not available.