Person Months.

Calculate perons months for personnel effort in grants.

Usage

percentEffort(
  academicMonths = NULL,
  calendarMonths = NULL,
  summerMonths = NULL,
  appointment = 9
)

personMonths(
  academicMonths = NULL,
  calendarMonths = NULL,
  summerMonths = NULL,
  effortAcademic = NULL,
  effortCalendar = NULL,
  effortSummer = NULL,
  appointment = 9
)

Arguments

academicMonths

The number of academic months.

calendarMonths

The number of calendar months.

summerMonths

The number of summer months.

appointment

The duration (in months) of one's annual appointment; used as the denominator for determining the timeframe out of which the academic months occur. Default is a 9-month appointment.

effortAcademic

Percent effort (in proportion) during academic months.

effortCalendar

Percent effort (in proportion) during calendar months.

effortSummer

Percent effort (in proportion) during summer months.

Value

The person months of effort.

Details

Calculate person months for personnel effort in grant proposals from academic months, calendar months, and summer months.

See also

https://web.archive.org/web/20250211141002/https://nexus.od.nih.gov/all/2015/05/27/how-do-you-convert-percent-effort-into-person-months/

Examples

# Specify Values
appointmentDuration <- 9 #(in months)

# Specify either Set 1 (months) or Set 2 (percent effort) below:

#Set 1: Months
academicMonths <- 1.3 #AY (academic year) months (should be between 0 to appointmentDuration)
calendarMonths <- 0 #CY (calendar year) months (should be between 0-12)
summerMonths <- 0.5 #SM (summer) months (should be between 0 to [12-appointmentDuration])

# Set 2: Percent Effort
percentEffortAcademic <- 0.1444444 #(a proportion; should be between 0-1)
percentEffortCalendar <- 0 #(a proportion; should be between 0-1)
percentEffortSummer <- 0.1666667 #(a proportion; should be between 0-1)

# Calculations
summerDuration <- 12 - appointmentDuration

# Percent effort (in proportion)
percentEffort(academicMonths = academicMonths)
#> [1] 0.1444444
percentEffort(calendarMonths = calendarMonths)
#> [1] 0
percentEffort(summerMonths = summerMonths)
#> [1] 0.1666667

# Person-Months From NIH Website
(percentEffort(academicMonths = academicMonths) * appointmentDuration) +
 (percentEffort(calendarMonths = calendarMonths) * 12) +
 (percentEffort(summerMonths = summerMonths) * summerDuration)
#> [1] 1.8

# Person-Months from Academic/Calendar/Summer Months
personMonths(academicMonths = academicMonths,
             calendarMonths = calendarMonths,
             summerMonths = summerMonths)
#> [1] 1.8

# Person-Months from Percent Effort
personMonths(effortAcademic = percentEffortAcademic,
             effortCalendar = percentEffortCalendar,
             effortSummer = percentEffortSummer)
#> [1] 1.8