e_calc_phq2_categories | R Documentation |
PHQ-2 Scores and Proposed Treatment Actions. https://www.pcpcc.org/sites/default/files/resources/instructions.pdf
e_calc_phq2_categories(
phq2,
phq2_breaks = c(-Inf, 3, Inf),
phq2_labels = c("None-minimal", "Depressed")
)
phq2 |
PHQ-2 scores (0 - 6) |
phq2_breaks |
Breaks defining labeled ranges, intervals are closed on the left (typically, 3 or greater indicates major depressive disorder is likely) |
phq2_labels |
Labels for values between break values including lower bound |
The PHQ-2 inquires about the frequency of depressed mood and anhedonia over the past two weeks. The PHQ-2 includes the first two items of the PHQ-9. The purpose of the PHQ-2 is to screen for depression in a "first-step" approach. Patients who screen positive should be further evaluated with the PHQ-9 to determine whether they meet criteria for a depressive disorder. PHQ-2 score obtained by adding score for each question (total points)
Interpretation: A PHQ-2 score ranges from 0-6. The authors identified a score of 3 as the optimal cutpoint when using the PHQ-2 to screen for depression. If the score is 3 or greater, major depressive disorder is likely. Patients who screen positive should be further evaluated with the PHQ-9, other diagnostic instruments, or direct interview to determine whether they meet criteria for a depressive disorder.
phq2_cat, categorical levels of PHQ-2
e_calc_phq2_categories(c(0, 2, 3, 5))
dplyr::tibble(
phq2 = seq(0, 6, by = 1)
, phq2_cat = phq2 |> e_calc_phq2_categories()
) |>
print(n = Inf)
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