This function creates a categorical variable that flags for increased short term health risks due to their drinking habits, according to Canada's Low-Risk Alcohol Drinking Guideline.

low_drink_short_fun(
  DHH_SEX,
  ALWDWKY,
  ALC_1,
  ALW_1,
  ALW_2A1,
  ALW_2A2,
  ALW_2A3,
  ALW_2A4,
  ALW_2A5,
  ALW_2A6,
  ALW_2A7
)

Arguments

DHH_SEX

Sex of respondent (1 - male, 2 - female)

ALWDWKY

Number of drinks consumed in the past week

ALC_1

Drinks in the past year (1 - yes, 2 - no)

ALW_1

Drinks in the last week (1 - yes, 2 - no)

ALW_2A1

Number of drinks on Sunday

ALW_2A2

Number of drinks on Monday

ALW_2A3

Number of drinks on Tuesday

ALW_2A4

Number of drinks on Wednesday

ALW_2A5

Number of drinks on Thursday

ALW_2A6

Number of drinks on Friday

ALW_2A7

Number of drinks on Saturday

Value

Categorical variable (ALWDVSTR_der) with two categories:

  • 1 - Increased short term health risk

  • 2 - No increased short term health risk

Details

The classification of drinkers according to their short term health risks comes from guidelines in Alcohol and Health in Canada: A Summary of Evidence and Guidelines for Low-risk Drinking, and is based on the alcohol consumption reported over the past week. Short-term or acute risks include injury and overdose.

Categories are based on CCHS 2015-2016's variable (ALWDVSTR) where short term health risk are increased when drinking more than 3 drinks (for women) or 4 drinks (for men) on any single occasion.

See https://osf.io/ykau5/ for more details on the guideline. See https://osf.io/ycxaq/ for more details on derivation of the function on page 9.

Examples

 
# Using low_drink_short_fun() to create ALWDVSTR_der values across CCHS cycles
# low_drink_short_fun() is specified in variable_details.csv along with the
# CCHS variables and cycles included.

# To transform ALWDVSTR_der, use rec_with_table() for each CCHS cycle
# and specify ALWDVSTR_der, along with the various alcohol and sex
# variables. 
# Using merge_rec_data(), you can combine ALWDVSTR_der across cycles.

library(cchsflow)
short_low_drink2001 <- rec_with_table(
  cchs2001_p, c(
    "ALW_1", "DHH_SEX", "ALW_2A1", "ALW_2A2", "ALW_2A3", "ALW_2A4",
    "ALW_2A5", "ALW_2A6", "ALW_2A7", "ALWDWKY", "ALC_1","ALWDVSTR_der"
  )
)
#> No variable_details detected.
#>               Loading cchsflow variable_details
#> Using the passed data variable name as database_name
#> NOTE for ALWDWKY: shown as categorical variable in CCHS 2014 cycle

head(short_low_drink2001)
#>   ALC_1 ALW_1 ALW_2A1 ALW_2A2 ALW_2A3 ALW_2A4 ALW_2A5 ALW_2A6 ALW_2A7 ALWDWKY
#> 1     1     1       0       0       1       0       1       0       0       2
#> 2     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 3     1     1       0       0       0       1       6       0       1       8
#> 4     1     2      NA      NA      NA      NA      NA      NA      NA       0
#> 5     1     1       0       0       0       0       0       8       0       8
#> 6     1     2      NA      NA      NA      NA      NA      NA      NA       0
#>   DHH_SEX ALWDVSTR_der
#> 1       2            2
#> 2       2        NA(b)
#> 3       1            1
#> 4       2        NA(b)
#> 5       2            1
#> 6       1        NA(b)

short_low_drink2009_2010 <- rec_with_table(
  cchs2009_2010_p, c(
    "ALW_1", "DHH_SEX", "ALW_2A1", "ALW_2A2", "ALW_2A3", "ALW_2A4",
    "ALW_2A5", "ALW_2A6", "ALW_2A7", "ALWDWKY", "ALC_1","ALWDVSTR_der"
  )
)
#> No variable_details detected.
#>               Loading cchsflow variable_details
#> Using the passed data variable name as database_name
#> NOTE for ALWDWKY: shown as categorical variable in CCHS 2014 cycle

tail(short_low_drink2009_2010)
#>     ALC_1 ALW_1 ALW_2A1 ALW_2A2 ALW_2A3 ALW_2A4 ALW_2A5 ALW_2A6 ALW_2A7 ALWDWKY
#> 195     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 196     1     2      NA      NA      NA      NA      NA      NA      NA       0
#> 197     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 198     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 199     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 200     1     2      NA      NA      NA      NA      NA      NA      NA       0
#>     DHH_SEX ALWDVSTR_der
#> 195       2        NA(b)
#> 196       2        NA(b)
#> 197       2        NA(b)
#> 198       1        NA(b)
#> 199       2        NA(b)
#> 200       2        NA(b)

combined_short_low_drink <- bind_rows(short_low_drink2001, 
short_low_drink2009_2010)

head(combined_short_low_drink)
#>   ALC_1 ALW_1 ALW_2A1 ALW_2A2 ALW_2A3 ALW_2A4 ALW_2A5 ALW_2A6 ALW_2A7 ALWDWKY
#> 1     1     1       0       0       1       0       1       0       0       2
#> 2     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 3     1     1       0       0       0       1       6       0       1       8
#> 4     1     2      NA      NA      NA      NA      NA      NA      NA       0
#> 5     1     1       0       0       0       0       0       8       0       8
#> 6     1     2      NA      NA      NA      NA      NA      NA      NA       0
#>   DHH_SEX ALWDVSTR_der
#> 1       2            2
#> 2       2        NA(b)
#> 3       1            1
#> 4       2        NA(b)
#> 5       2            1
#> 6       1        NA(b)

tail(combined_short_low_drink)
#>     ALC_1 ALW_1 ALW_2A1 ALW_2A2 ALW_2A3 ALW_2A4 ALW_2A5 ALW_2A6 ALW_2A7 ALWDWKY
#> 395     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 396     1     2      NA      NA      NA      NA      NA      NA      NA       0
#> 397     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 398     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 399     2 NA(a)      NA      NA      NA      NA      NA      NA      NA      NA
#> 400     1     2      NA      NA      NA      NA      NA      NA      NA       0
#>     DHH_SEX ALWDVSTR_der
#> 395       2        NA(b)
#> 396       2        NA(b)
#> 397       2        NA(b)
#> 398       1        NA(b)
#> 399       2        NA(b)
#> 400       2        NA(b)

# Using low_drink_short_fun() to generate ALWDVSTR_der with user-inputted
# values.
#
# Let's say you are a male, you had drinks in the last week and in the last 
# year. Let's say you had 5 drinks on Sunday, 1 drink on Monday, 6 drinks on 
# Tuesday, 4 drinks on Wednesday, 4 drinks on Thursday, 8 drinks on Friday, 
# and 2 drinks on Saturday with a total of 30 drinks in a week. 
# Using low_drink_short_fun(), we can check if you would be classified as
# having an increased short term health risk due to drinking.

short_term_drink <- low_drink_short_fun(DHH_SEX = 1, ALWDWKY = 30, ALC_1 = 1,
 ALW_1 = 1, ALW_2A1 = 5, ALW_2A2 = 1, ALW_2A3 = 6, ALW_2A4 = 4, ALW_2A5 = 4, 
 ALW_2A6 = 8, ALW_2A7 = 2)

print(short_term_drink)
#> [1] 1