R/questions.R
questions.RdIn many survey systems, sub-questions take the form Q1_a, Q1_b, with the main question and sub-question separated by an underscore. This function conveniently returns all of the main questions in a surveydata() object. It does this by using the pattern() attribute of the surveydata object.
questions(x, ptn = pattern(x))numeric vector
which.q
Other Question functions:
question_text_common(),
question_text_unique(),
question_text(),
split_common_unique(),
which.q()
# Basic operations on a surveydata object, illustrated with the example dataset membersurvey
class(membersurvey)
#> [1] "surveydata" "data.frame"
questions(membersurvey)
#> [1] "id" "Q1" "Q2" "Q3" "Q4" "Q5"
#> [7] "Q6" "Q7" "Q8" "Q9" "Q10" "Q11"
#> [13] "Q11_other" "Q12" "Q13" "Q14" "Q15" "Q19"
#> [19] "Q20" "Q20_other" "Q21" "Q23" "Q23_other" "Q24"
#> [25] "Q25" "Q26" "Q27" "Q30" "Q30_other" "Q31"
#> [31] "Q31_other" "Q32" "Q33" "Q35" "weight" "size"
which.q(membersurvey, "Q1")
#> [1] 2 3
which.q(membersurvey, "Q3")
#> [1] 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
which.q(membersurvey, c("Q1", "Q3"))
#> [1] 2 3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
question_text(membersurvey, "Q3")
#> [1] "[Carry out ad hoc qualitative projects] With regard to your market research work, which of these do you do at all?"
#> [2] "[Carry out ad hoc quantitative projects] With regard to your market research work, which of these do you do at all?"
#> [3] "[Design ad hoc projects but don't personally carry them out] With regard to your market research work, which of these do you do at all?"
#> [4] "[Design/advise on research programmes as a whole] With regard to your market research work, which of these do you do at all?"
#> [5] "[Provide project management] With regard to your market research work, which of these do you do at all?"
#> [6] "[Summarise previous research] With regard to your market research work, which of these do you do at all?"
#> [7] "[Carry out desk research] With regard to your market research work, which of these do you do at all?"
#> [8] "[Provide modelling/ statistical services] With regard to your market research work, which of these do you do at all?"
#> [9] "[Provide consultancy on other specific aspects of research] With regard to your market research work, which of these do you do at all?"
#> [10] "[Provide field services] With regard to your market research work, which of these do you do at all?"
#> [11] "[Provide data processing services] With regard to your market research work, which of these do you do at all?"
#> [12] "[Provide other part project services (interviewing, moderating, report writing)] With regard to your market research work, which of these do you do at all?"
#> [13] "[Lecture/teach] With regard to your market research work, which of these do you do at all?"
#> [14] "[Provide training services] With regard to your market research work, which of these do you do at all?"
#> [15] "[Interim management] With regard to your market research work, which of these do you do at all?"
question_text_unique(membersurvey, "Q3")
#> [1] "Carry out ad hoc qualitative projects"
#> [2] "Carry out ad hoc quantitative projects"
#> [3] "Design ad hoc projects but don't personally carry them out"
#> [4] "Design/advise on research programmes as a whole"
#> [5] "Provide project management"
#> [6] "Summarise previous research"
#> [7] "Carry out desk research"
#> [8] "Provide modelling/ statistical services"
#> [9] "Provide consultancy on other specific aspects of research"
#> [10] "Provide field services"
#> [11] "Provide data processing services"
#> [12] "Provide other part project services (interviewing, moderating, report writing)"
#> [13] "Lecture/teach"
#> [14] "Provide training services"
#> [15] "Interim management"
question_text_common(membersurvey, "Q3")
#> [1] "With regard to your market research work, which of these do you do at all?"
# Extracting columns from a surveydata object
head(membersurvey[, "Q1"])
#> Q1_1 Q1_2
#> 1 8 2
#> 2 35 12
#> 3 34 12
#> 4 20 9
#> 5 20 3
#> 6 36 20
head(membersurvey["Q1"])
#> Q1_1 Q1_2
#> 1 8 2
#> 2 35 12
#> 3 34 12
#> 4 20 9
#> 5 20 3
#> 6 36 20
head(membersurvey[, "Q3"])
#> Q3_1 Q3_2 Q3_3 Q3_4 Q3_5 Q3_6 Q3_7 Q3_8 Q3_9 Q3_10 Q3_11 Q3_12 Q3_13 Q3_14
#> 1 No No No No No No No No No Yes No No No No
#> 2 Yes No No No No No No No Yes No No Yes No No
#> 3 Yes Yes No No No Yes No No No No No No No No
#> 4 No No No No No No No No No No Yes No No No
#> 5 No No No No No No No No No No No No No Yes
#> 6 No Yes No No No No No No Yes No No No No No
#> Q3_15
#> 1 No
#> 2 No
#> 3 No
#> 4 No
#> 5 No
#> 6 No
head(membersurvey[, c("Q1", "Q3")])
#> Q1_1 Q1_2 Q3_1 Q3_2 Q3_3 Q3_4 Q3_5 Q3_6 Q3_7 Q3_8 Q3_9 Q3_10 Q3_11 Q3_12
#> 1 8 2 No No No No No No No No No Yes No No
#> 2 35 12 Yes No No No No No No No Yes No No Yes
#> 3 34 12 Yes Yes No No No Yes No No No No No No
#> 4 20 9 No No No No No No No No No No Yes No
#> 5 20 3 No No No No No No No No No No No No
#> 6 36 20 No Yes No No No No No No Yes No No No
#> Q3_13 Q3_14 Q3_15
#> 1 No No No
#> 2 No No No
#> 3 No No No
#> 4 No No No
#> 5 No Yes No
#> 6 No No No
# Note that the result is always a surveydata object, even if only one column is extracted
head(membersurvey[, "id"])
#> id
#> 1 3
#> 2 5
#> 3 6
#> 4 11
#> 5 13
#> 6 15
str(membersurvey[, "id"])
#> Classes ‘surveydata’ and 'data.frame': 215 obs. of 1 variable:
#> $ id: num 3 5 6 11 13 15 21 22 23 25 ...
#> - attr(*, "variable.labels")= Named chr "id"
#> ..- attr(*, "names")= chr "id"
#> - attr(*, "pattern")=List of 2
#> ..$ sep : chr "_"
#> ..$ exclude: chr "other"