Generally speaking, who has the highest to lowest probability of having any sexually-transmitted infection, including HIV, or non-sexually-transmitted infection, such as jock itch: (1) a female bar pickup for vaginal intercourse, (2) a female massage parlor commercial sex worker charging $210 per hour for vaginal intercourse, or (3) a female commercial sex worker by appointment charging $210 per hour for vaginal intercourse? From what is known, or alternatively, from what you think, are there any other factors that affect this answer? For example, is this answer affected by when and where the encounter occurs (such as if the encounter occurred years ago adjusting for inflation or in a specific part of a city or country), as well as race, ethnicity, age, or national origin of any of the participants? 

Welcome back to the Forum although I'm not sure why you have returned.  Several weeks ago in response to a very similar question I replied- "I can only answer with generalizations however, massage partner CSWs, as a generalization, have a vested interest in making sure they are not infected and tend to take precautions to avoid STIs or, through regular check ups, get checked regularly to permit rapid treatment if they become infected.  As a result, their risk for STIs, including HIV are likely to be lower than an impulsive, potential risk taking partner who may not take precautions and may be less likely to get regular check ups.  Remember, massage partner CSWs are professionals and infecting partners is bad for business since clients know where to find them if they want or need to see them again.  OTOH, you may never see a casual partner again."---

Thank you for your response. As a follow up, does the answer change depending on what part of which city in the United States of America the encounter occurs?

Please disregard the last question. As a follow up, does the answer change depending on where in which city in the United States of America the encounter occurs?

The U.S. city in which the encounter makes a slight difference, particularly for category number 1.  EWH---

Understanding that the U.S. city in which the encounter occurred makes a slight difference, would it change your estimation that risk is highest for a partner described in category number 1, as opposed to category number 2 or category number 3?

Final answer, no, I would not change my response to your initial questions---