REFERENCES
- Terluin B, Marwijk HWJ van, Adèr HJ, Vet HCW de, Penninx BWJH, Hermens MLM, et al. The four-dimensional symptom questionnaire (4DSQ): A validation study of a multidimensional self-report questionnaire to assess distress, depression, anxiety and somatization. BMC Psychiatry 2006;6:34.
- Terluin B. De Vierdimensionale Klachtenlijst (4DKL). Een vragenlijst voor het meten van distress, depressie, angst en somatisatie. (The four-dimensional symptom questionnaire (4DSQ). A questionnaire to measure distress, depression, anxiety, and somatization). Huisarts Wet 1996;39:538–47.
- Miedema B, Jong J de . Support for the very old in Sweden and Canada: The pitfalls of cross-cultural studies; same words, different concepts?Health Soc Care Community 2005;13: 231–8.
- Terluin B. Overspanning onderbouwd. Een onderzoek naar de diagnose surmenage in de huisartspraktijk. (Nervous breakdown substantiated. A study of the general practitioner's diagnosis of surmenage.) PhD thesis. Utrecht: Universiteit Utrecht; 1994.
- Terluin B, Brouwers EPM, Marwijk HWJ van, Verhaak PFM, Horst HE van der . Detecting depressive and anxiety disorders in distressed patients in primary care; comparative diagnostic accuracy of the four-dimensional symptom questionnaire (4DSQ) and the hospital anxiety and depression scale (HADS). BMC Fam Pract. 2009;10:58.
- Ginkel JR van, Ark LA van der . SPSS syntax for missing value imputation in test and questionnaire data. Appl Psychol Meas. 2005;29:152–3.
- Rosseel Y. Lavaan: An R package for structural equation modeling. J Stat Softw. 2012;48:2.
- Hu L, Bentler PM. Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Struct Equ Modeling 1999;6:1–55.
- Michaelides MP. An illustration of a Mantel–Haenszel procedure to flag misbehaving common items in test equating. PARE 2008;13:7.
- Zumbo BD. A Handbook on the theory and methods of differential item functioning (DIF): Logistic regression modeling as a unitary framework for binary and Likert-type (ordinal) item scores. Ottawa ON: Directorate of Human Resources Research and Evaluation, Department of National Defense; 1999.
- Choi SW, Gibbons LE, Crane PK. Lordif: An R package for detecting differential item functioning using iterative hybrid ordinal logistic regression/item response theory and Monte Carlo simulations. J Stat Softw. 2011;39:1–30.
- Stark S, Chernyshenko OS, Drasgow F. Examining the effects of differential item (functioning and differential) test functioning on selection decisions: When are statistically significant effects practically important?J Appl Psychol. 2004;89:497–508.
- Cohen J. Statistical power analysis for the behavioral sciences. New York: Academic Press; 1977.
- Terluin B, Terluin M, Prince K, Marwijk HWJ van. De Vierdimensionale Klachtenlijst (4DKL) spoort psychische problemen op. (The Four-dimensional symptom questionnaire (4DSQ) detects psychological problems (English translation available on: http://www.emgo.nl/researchtools/4DSQ-cme-article.pdf)). Huisarts Wet 2008;51:251–5.