View source: R/f_controlType.R
f.controlType | R Documentation |
Trial concept calculated: type of internal control. ICH E10 lists as types of control: placebo concurrent control, no-treatment concurrent control, dose-response concurrent control, active (positive) concurrent control, external (including historical) control, multiple control groups. Dose-controlled trials are currently not identified. External (including historical) controls are so far not identified in specific register fields. Cross-over designs, where identifiable, have active controls.
f.controlType(df = NULL)
df |
data frame such as from dbGetFieldsIntoDf. If 'NULL', prints fields needed in 'df' for calculating this trial concept, which can be used with dbGetFieldsIntoDf. |
data frame with columns '_id' and '.controlType', which is a factor with levels 'none', 'no-treatment', 'placebo', 'active', 'placebo+active' and 'other'.
# fields needed
f.controlType()
## Not run:
# apply trial concept when creating data frame
dbc <- nodbi::src_sqlite(
dbname = system.file("extdata", "demo.sqlite", package = "ctrdata"),
collection = "my_trials", flags = RSQLite::SQLITE_RO)
trialsDf <- dbGetFieldsIntoDf(
calculate = "f.controlType",
con = dbc)
## End(Not run)
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