createTimeSeries — createTimeSeries • Achilles

createTimeSeries Creates a monthly multivariate time series object given a data frame in the proper format.

createTimeSeries(temporalData)

Arguments

temporalData: A data frame from which to create the time series

Value

A multivariate time series object

Details

createTimeSeries Requires the following:

 1. The given data frame must contain
four columns: START_DATE, COUNT_VALUE, PREVALENCE, and PROPORTION_WITHIN_YEAR. 2. START_DATE must
be in the YYYYMMDD format. 3. COUNT_VALUE, PREVALENCE, and PROPORTION_WITHIN_YEAR contain only
numeric data.

The individual monthly univariate time series can be extracted by specifying the correct column name (see example).

Examples

# Example 1:
temporalData <- data.frame(START_DATE = seq.Date(as.Date("20210101", "%Y%m%d"),
                                                 as.Date("20231201",
  "%Y%m%d"), by = "month"), COUNT_VALUE = round(runif(36, 1, 1000)), PREVALENCE = round(runif(36,
  0, 10), 2), PROPORTION_WITHIN_YEAR = round(runif(36, 0, 1), 2), stringsAsFactors = FALSE)
dummyTs <- createTimeSeries(temporalData)
dummyTs.cv <- dummyTs[, "COUNT_VALUE"]
dummyTs.pv <- dummyTs[, "PREVALENCE"]
dummyTs.pwy <- dummyTs[, "PROPORTION_WITHIN_YEAR"]

if (FALSE) {
# Example 2:
pneumonia <- 255848
temporalData <- getTemporalData(connectionDetails = connectionDetails, cdmDatabaseSchema = "cdm",
  resultsDatabaseSchema = "results", conceptId = pneumonia)
pneumoniaTs <- createTimeSeries(temporalData)
pneumoniaTs.cv <- pneumoniaTs[, "COUNT_VALUE"]
pneumoniaTs.pv <- pneumoniaTs[, "PREVALENCE"]
pneumoniaTs.pwy <- pneumoniaTs[, "PROPORTION_WITHIN_YEAR"]
}