Table 1 Codebook
Variable | Description | Values/labels |
|---|---|---|
STUDY_ID | This variable identifies the database that the data come from, using the primary author or principal investigator of the original study as the label | 1 = Study 1 |
2 = Study 2 | ||
3 = Study 3 | ||
4 …. | ||
COUNTRY | Country where the study took place | Â |
CLINICAL SETTING | Clinical setting where the study took place | 1 = Primary care |
2 = Specialty care | ||
3 = Non-medical setting | ||
DEPRESSD_PT_ID | DEPRESSD Registry ID. | Sequential numbers from 1 to n |
AGE | Patient’s age | Numerical value |
SEX | Patient’s sex | 1 = Female |
2 = Male | ||
999 = Missing | ||
PHQ9_Q1 | Patient data for the first PHQ-9 item: Interest/pleasure | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q2 | Patient data for the second PHQ-9 item: Down/depressed/hopeless | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q3 | Patient data for the third PHQ-9 item: Sleep | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q4 | Patient data for the fourth PHQ-9 item: Tired/energy | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q5 | Patient data for the fifth PHQ-9 item: Appetite | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q6 | Patient data for the sixth PHQ-9 item: Feeling bad about self | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q7 | Patient data for the seventh PHQ-9 item: Concentrating | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q8 | Patient data for the eighth PHQ-9 item: Moving | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q9 | Patient data for the ninth PHQ-9 item: Deaths/hurting self | 0 = Not at all |
1 = Several days | ||
2 = More than half the days | ||
3 = Nearly every day | ||
999 = Missing | ||
PHQ9_Q10 | Patient data for final PHQ-9 question: how difficult these problems have made life | 0 = Not difficult at all |
1 = Somewhat difficult | ||
2 = Very difficult | ||
3 = Extremely difficult | ||
999 = Missing | ||
PHQ9_TOTAL | Total PHQ-9 score (sum of the nine-item scores) | 999 = Missing |
DEP_CRITERION | Name of diagnostic interview | 1 = SCID-IV |
2 = CIDI | ||
3 = DIS | ||
4 = SCAN | ||
5 = MINI | ||
CLASSIF_SYSTEM | Classification system used to classify patients as depressed or not. Include version of DSM/ICD | 1 = ICD-10 |
2 = DSM-IV | ||
3 = DSM-III | ||
MDD_DICHOT | Major depression diagnostic status | 0 = no MDD |
1 = MDD | ||
999 = missing | ||
CUR_PSYC_TX | Currently receiving psychological treatment for depression versus not currently receiving psychological treatment for depression | 0 = Not currently receiving psychological treatment for depression |
1 = Currently receiving psychological treatment for depression | ||
777 = Unknown | ||
999 = Missing | ||
CUR_PHAR_TX | Currently receiving antidepressant medication versus not currently receiving antidepressant medication | 0 = Not currently receiving antidepressant medication |
1 = Currently receiving antidepressant medication | ||
777 = Unknown | ||
999 = Missing | ||
CUR_UNSPEC_TX | Currently receiving treatment for depression or not currently receiving treatment for depression (type of treatment not specified) | 0 = Not currently receiving unspecified treatment for depression |
1 = Currently receiving unspecified treatment for depression | ||
777 = Unknown | ||
999 = Missing | ||
ANY_CUR_TX | Currently receiving any kind of treatment (psychological, pharmacological, or unspecified) for depression or not currently receiving any kind of treatment for depression. | 0 = Not currently receiving treatment for depression |
1 = Currently receiving treatment for depression | ||
777 = Unknown | ||
999 = Missing | ||
MEDICAL_COMORBIDITY | Primary medical comorbidity or multiple comorbidities | 0 = None |
1 = CVD | ||
2 = Diabetes | ||
3 = Cancer | ||
4 = Rheumatic disease | ||
5 = Substance abuse | ||
6 = Other | ||
7 = Multiple | ||
RISK_OF_BIAS_PT_SEL | QUADAS-2: Risk of Bias: Patient Selection | 1 = Low |
2 = Unclear | ||
3 = High | ||
RISK_OF_BIAS_INDEX | QUADAS-2: Risk of Bias: Index Test | 1 = Low |
2 = Unclear | ||
3 = High | ||
RISK_OF_BIAS_REF_STD | QUADAS-2: Risk of Bias: Reference Standard | 1 = Low |
2 = Unclear | ||
3 = High | ||
RISK_OF_BIAS_FLOW | QUADAS-2: Risk of Bias: Flow and Timing | 1 = Low |
2 = Unclear | ||
3 = High | ||
APPLIC_PT_SEL | QUADAS-2: Applicability Concerns: Patient Selection | 1 = Low |
2 = Unclear | ||
3 = High | ||
APPLIC_INDEX | QUADAS-2: Applicability Concerns: Index Test | 1 = Low |
2 = Unclear | ||
3 = High | ||
APPLIC_REF_STD | QUADAS-2: Applicability Concerns: Reference Standard | 1 = Low |
2 = Unclear | ||
3 = High |