• iProductivity Cost Questionnaire (iPCQ)
    (in English UK, English US, Dutch, Arabic, Czech, Danish, Finnish, French, German, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Spanish and Turkish).
  • iMedical Consumption Questionnaire (iMCQ)
    (in English, Dutch, Arabic, Danish, Finnish and Turkish).
  • Treatment Inventory of Costs in Patients with psychiatric disorders (TIC-P).
    Adults (Dutch, English UK, English US, Czech, Danish, German, Portuguese and Spanish), TIC-P Kinderen (in Dutch), TIC-P Midi Volwassenen (in Dutch).
    Note: The TIC-P Midi can be used in populations that correspond to the population in the publication by Timman et al. (2015), i.e. institutionalized patients with personality disorders. In other populations, i.e. those receiving more outpatient care, the use of the full-length TIC-P is recommended, as discussed in Kanters et al. (2019).


  • iProductivity Cost Questionnaire (iPCQ) (in Dutch and English).
  • iMedical Consumption Questionnaire (iMCQ) (in Dutch and English).
  • TIC-P Adults (in Dutch and English).
  • TIC-P Kinderen (in Dutch).

Registration form


  • Bouwmans C, De Jong K, Timman R, Zijlstra-Vlasveld M, Van der Feltz-Cornelis C, Tan SS, Hakkaart-van Roijen L. (2013) Feasibility, reliability and validity of a questionnaire on healthcare consumption and productivity loss in patients with a psychiatric disorder (TiC-P). BMC Health Services Research. 13:217
  • Bouwmans C, Krol M, Severens H, Koopmanschap M, Brouwer W, Hakkaart-van Roijen L. (2015) The IMTA Productivity Cost Questionnaire: A standardized instrument for measuring and valuing health-related productivity losses. Value in Health. 18:753-758
  • Timman R, Bouwmans C, Busschbach JJV, Hakkaart-van Roijen L (2015) Development of the Treatment Inventory of Costs in Psychiatric Patients: TIC-P Mini and Midi. Value in Health. 18:994-999
  • Kanters TA, Timman R, Zijlstra-Vlasveld M, Muntingh A, Huijbregts KM, Van Steenbergen-Weijenburg KM, Bouwmans CAM, Van der Feltz-Cornelis CM, Hakkaart-van Roijen L (2019) Assessing costs using the Treatment Inventory Cost in Psychiatric Patients (TIC-P), TIC-P Mini and TIC-P Midi. The Journal of Mental Health Policy and Economics. 22:15-24
  • Munk R, Storheim K, Smastuen MC, Grotle M (2019) Measuring Productivity Costs in Patients With Musculoskeletal Disorders: Measurement Properties of the Institute for Medical Technology Assessment Productivity Cost Questionnaire. Value in Health. 22:1410-1416
  • Kim H, Park KS, Yoo JE, Kim S, Han S, Suh HS (2020) Cultural Adaptation and Validation of the Korean Version of the iMTA Productivity Cost Questionnaire. Healthcare. 8:184
  • Al-Aqeel SA, AlAujan SS, Almazrou SH (2021) The Institute for Medical Technology Assessment Productivity Cost Questionnaire (iPCQ) and the Medical Consumption Questionnaire (iMCQ): Translation and Cognitive Debriefing of the Arabic Version. International Journal of Environmental Research and Public Health. 18:7232