rptc

Constant reporters of a reporting panel

R

rptc(unit, year, rep, y0, y1, minrep = 12)

The units (agencies reporting to a national crime statistics programme, say) that report at least minrep months in every year from y0 to y1. A year without a record of the unit, or with too few months, disqualifies it, whatever other units do that year. Counts over time are comparable only on such a constant panel; a trend from all reporters mixes change in crime with change in who reports.

Parameters

unit

The unit of each record: labels, no missing values.

year

The year of each record: whole numbers.

rep

The months reported in each record: whole numbers.

y0, y1

The first and last years, y0 <= y1, from 0.

minrep

The fewest months that count as reporting: a whole number from 0.

Returns

A data frame with one row per unit (sorted): unit and const (TRUE for a constant reporter).

References

Maltz, M. D. (1999). Bridging Gaps in Police Crime Data. Bureau of Justice Statistics, NCJ 176365.

Examples

rptc(unit = c("a", "a", "b", "b", "b"), year = c(2020, 2021, 2020, 2021,
     2021), rep = c(12, 12, 12, 6, 12), y0 = 2020, y1 = 2021)

Generated from the R help page: rptc in the R reference.