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Vacancy rates were calculated using the same method for each discipline. For full-time vacancy positions, the numerator included the number of full-time positions for each discipline that were vacant at the end of 2007 (question 11 on the "Direct Support Staff Turnover Survey" used for the study). The denominator was the sum of the number of full-time positions that were vacant at the end of 2007 (question 11, total, on survey) plus the number of staff for each discipline that were employed full-time (question 10, total, on survey). Vacancy rates were calculated by dividing the numerator by the denominator and multiplying the result by 100.
Turnover was calculated using the same method for each discipline. The numerator included the number of direct support staff that separated from an employer during the 2007 calendar year (question 6 on survey). The denominator included the number of 2007 year-end staff for each discipline (question 4 on survey). Turnover rates were calculated by dividing the numerator by the denominator and multiplying the result by 100.
Longevity was calculated using responses to question 5 on the survey. The numerator was being continuously employed for less than 6 months (g), between 6 and 12 months (h), or over 12 months (i) at the end of 2007. The denominator is the sum of these responses ([(g) + (h) + (i)]). The percent staff continuously employed for each discipline was calculated by dividing the numerator (either (g), (h), or (i)) by the denominator ([(g) + (h) + (i)]) and multiplying the result by 100.
The length of time direct support staff were continuously employed at the time of separation was obtained from responses to question 7 on the survey. The numerator was being continuously employed for less than 6 months (k), between 6 and 12 months (l), between 12 months and 5 years (m), or 5 or more years (n) at the time of separation. The denominator is the sum of these responses ([(k) + (l) + (m) + (n)]). The percent staff separated for each discipline was calculated by dividing the numerator (either (k), (l), (m), or (n)) by the denominator ([(k) + (l) + (m) + (n)]) and multiplying the result by 100.
Updated: November 23, 2010