bp_stages {bp}

Alternative Blood Pressure Stages

Description

Adds BP_CLASS, SBP_Category, and DBP_Category columns to supplied dataframe.

Usage

bp_stages(
  data,
  sbp,
  dbp,
  inc_low = TRUE,
  inc_crisis = TRUE,
  data_screen = TRUE,
  SUL = 240,
  SLL = 50,
  DUL = 140,
  DLL = 40,
  adj_sbp_dbp = TRUE
)

Arguments

data

User-supplied dataset containing blood pressure data. Must contain data for Systolic blood pressure and Diastolic blood pressure at a minimum.

sbp

column name corresponding to systolic blood pressure (SBP)

dbp

column name corresponding to diastolic blood pressure (DBP)

inc_low

A TRUE / FALSE indicator of whether or not to include the "Low" (Hypotension) category to the scatter plot. The range for Hypotension is set from a minimum of 25 for DBP or 80 for SBP, or the corresponding minimum value for either category from the data until 60 for DBP and 100 for SBP.

inc_crisis

A TRUE / FALSE indicator of whether or not to include the Hypertensive "Crisis" category to the scatter plot. The range for crisis is any value above 180 for SBP or above 120 for DBP.

data_screen

Default to TRUE. data_screens for extreme values in the data for both SBP and DBP according to Omboni, et al (1995) paper - Calculation of Trough:Peak Ratio of Antihypertensive Treatment from Ambulatory Blood Pressure: Methodological Aspects

SUL

Systolic Upper Limit (SUL). If data_screen = TRUE, then SUL sets the upper limit by which to exclude any SBP values that exceed this threshold. The default is set to 240 per Omboni, et al (1995) paper - Calculation of Trough:Peak Ratio of Antihypertensive Treatment from Ambulatory Blood Pressure: Methodological Aspects

SLL

Systolic Lower Limit (SLL). If data_screen = TRUE, then SLL sets the lower limit by which to exclude any SBP values that fall below this threshold. The default is set to 50 per Omboni, et al (1995) paper - Calculation of Trough:Peak Ratio of Antihypertensive Treatment from Ambulatory Blood Pressure: Methodological Aspects

DUL

Diastolic Upper Limit (DUL). If data_screen = TRUE, then DUL sets the upper limit by which to exclude any DBP values that exceed this threshold. The default is set to 140 per Omboni, et al (1995) paper - Calculation of Trough:Peak Ratio of Antihypertensive Treatment from Ambulatory Blood Pressure: Methodological Aspects

DLL

Diastolic Lower Limit (DLL). If data_screen = TRUE, then DLL sets the lower limit by which to exclude any DBP values that fall below this threshold. The default is set to 40 per Omboni, et al (1995) paper - Calculation of Trough:Peak Ratio of Antihypertensive Treatment from Ambulatory Blood Pressure: Methodological Aspects

adj_sbp_dbp

Logical indicator to dictate whether or not to run helper functions that adjust / process SBP & DBP columns in supplied data set. Default set to: adj_sbp_dbp = TRUE

Details

Supplied dataframe must adhere to the unified format using the process_data function.

Value

A dataframe with additional columns corresponding to the stages of high blood pressure and the supplementary SBP / DBP categories

References

Omboni, S., Parati, G*., Zanchetti, A., Mancia, G. Calculation of trough: peak ratio of antihypertensive treatment from ambulatory blood pressure: methodological aspects Journal of Hypertension. October 1995 - Volume 13 - Issue 10 - p 1105-1112 doi: 10.1097/00004872-199510000-00005

Examples

# Load bp_hypnos
data(bp_hypnos)

bp_stages(bp_hypnos, sbp = "syst", dbp = "diast")


# Load bp_jhs data
data(bp_jhs)

bp_stages(bp_jhs, sbp = "sys.mmhg.", dbp = "dias.mmhg.")