AOUSDOHtools (version 1.0.4)

calc_spa: Calculate Environmental Support for Physical Activity (SPA) Score

Description

This function computes a numeric score representing the environmental support for physical activity (SPA). The score ranges from 7 to 28, with higher scores indicating greater environmental support for physical activity.

Usage

calc_spa(survey_df)

Value

A data frame with two columns: `person_id` and `spa`, where `spa` is the sum score for environmental support for physical activity. The score is based on responses to seven items, with higher values indicating more support for physical activity. Participants who did not answer all seven questions will have NA values.

Arguments

survey_df

A data frame containing survey data with at least three columns: `person_id`, `question_concept_id`, and `answer_concept_id`.

Examples

# Create a sample survey data frame
survey_df <- data.frame(
  person_id = rep(1:3, each = 7),
  question_concept_id = rep(c(40192436, 40192440, 40192437, 40192431,
                              40192410, 40192492, 40192414), times = 3),
  answer_concept_id = sample(c(40192514, 40192478, 40192527, 40192422),
                             21, replace = TRUE)
)

# Compute environmental support for physical activity (SPA) scores
spa_scores <- calc_spa(survey_df)
head(spa_scores)