A survey sent out to 25,000 surgeons has revealed that the prevalence of alcoholism within this particular medical category is disproportionally high compared to that of the general population. At least 15 percent of surgeon respondents showed signs of alcohol abuse or dependency problems, while only about 9 percent of the general population struggles with alcohol problems. Published in the journal Archives of Surgery, the results of the survey also revealed that female surgeons are nearly twice as likely as male surgeons to have alcohol issues, with 14 percent of male surgeons and 26 percent of female surgeons indicating alcohol problems. And among all surgeons, both male and female, with alcohol dependency or addiction, nearly half of them admitted to causing a "major medical error" within the previous three months. What is the population, parameter, sample, and statistic?