impute_dtc_dt {admiral} | R Documentation |
'--DTC'
VariableImputation partial date portion of a '--DTC'
variable based on user input.
impute_dtc_dt(
dtc,
highest_imputation = "n",
date_imputation = "first",
min_dates = NULL,
max_dates = NULL,
preserve = FALSE
)
dtc |
The A character date is expected in a format like |
highest_imputation |
Highest imputation level The If a component at a higher level than the highest imputation level is
missing, If If Default: Permitted Values: |
date_imputation |
The value to impute the day/month when a datepart is missing. A character value is expected, either as a
The argument is ignored if Default: |
min_dates |
Minimum dates A list of dates is expected. It is ensured that the imputed date is not
before any of the specified dates, e.g., that the imputed adverse event start
date is not before the first treatment date. Only dates which are in the
range of possible dates of the impute_dtc_dtm( "2020-11", min_dates = list( ymd_hms("2020-12-06T12:12:12"), ymd_hms("2020-11-11T11:11:11") ), highest_imputation = "M" ) returns |
max_dates |
Maximum dates A list of dates is expected. It is ensured that the imputed date is not after any of the specified dates, e.g., that the imputed date is not after the data cut off date. Only dates which are in the range of possible dates are considered. A date or date-time object is expected. |
preserve |
Preserve day if month is missing and day is present For example Permitted Values: Default: |
Usually this computation function can not be used with %>%
.
A character vector
Date/Time Computation Functions that returns a vector:
compute_age_years()
,
compute_dtf()
,
compute_duration()
,
compute_tmf()
,
convert_date_to_dtm()
,
convert_dtc_to_dtm()
,
convert_dtc_to_dt()
,
impute_dtc_dtm()
library(lubridate)
dates <- c(
"2019-07-18T15:25:40",
"2019-07-18T15:25",
"2019-07-18T15",
"2019-07-18",
"2019-02",
"2019",
"2019",
"2019---07",
""
)
# No date imputation (highest_imputation defaulted to "n")
impute_dtc_dt(dtc = dates)
# Impute to first day/month if date is partial
impute_dtc_dt(
dtc = dates,
highest_imputation = "M"
)
# Same as above
impute_dtc_dt(
dtc = dates,
highest_imputation = "M",
date_imputation = "01-01"
)
# Impute to last day/month if date is partial
impute_dtc_dt(
dtc = dates,
highest_imputation = "M",
date_imputation = "last",
)
# Impute to mid day/month if date is partial
impute_dtc_dt(
dtc = dates,
highest_imputation = "M",
date_imputation = "mid"
)
# Impute a date and ensure that the imputed date is not before a list of
# minimum dates
impute_dtc_dt(
"2020-12",
min_dates = list(
ymd("2020-12-06"),
ymd("2020-11-11")
),
highest_imputation = "M"
)
# Impute completely missing dates (only possible if min_dates or max_dates is specified)
impute_dtc_dt(
c("2020-12", NA_character_),
min_dates = list(
ymd("2020-12-06", "2020-01-01"),
ymd("2020-11-11", NA)
),
highest_imputation = "Y"
)