CPHS utilities

get_HR_number(hr::Union{String, Missing})::Union{Int, Missing}

Extracts the number from a string of a form "HR ???" and returns it. If the input is missing, then missing is returned.

get_sentiment_props(df, sentiment_key; good = "Good times", bad = "Bad times", uncertain = "Uncertain times")

Takes in a DataFrame from the CPHS aspirational wave database, and returns a tuple of (bad_prop, good_prop, uncertain_prop).

The keys can be changed by keyword arguments; fundamentally, this is a helper function to extract proportions from a three-value system.