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Table 1 Measurement of psychological demands, decision latitude and depressive symptoms

From: Is the association between high strain work and depressive symptoms modified by private life social support: a cohort study of 1,074 Danish employees?

Construct Items Response categories
   PUMA IPAW
Psychological demands Do you have to work very fast? Always, often, some times, rarely, never/almost never Often, Some times, Seldomely, Never/almost never
  Do you have enough time for your work tasks? Always, often, some times, rarely, never/almost never Often, Some times, Seldomely, Never/almost never
  Are contradictory demands placed on you at work? Always, often, some times, seldomely, never/almost never -
Decision latitude Do you have the possibility of learning new things through your work? To a very high extent, to a high extent, somewhat, to a low degree, to a very low degree Often, Some times, Seldomely, Never/almost never
  Does your work require you to take the initiative? To a very high extent, to a high extent, somewhat, to a low degree, to a very low degree Often, Some times, Seldomely, Never/almost never
  Do you have any influence on what you do at work? Always, often, some times, seldomely, never/almost never Often, Some times, Seldomely, Never/almost never
  Is your work varied? To a very high extent, to a high extent, somewhat, to a low degree, to a very low degree -
  Do you have any influence on how you do your work? - Often, Some times, Seldomely, Never/almost never
  Does your work demand a high level of skill or expertise? - Often, Some times, Seldomely, Never/almost never
  Do you have to do the same thing over and over again? - Often, Some times, Seldomely, Never/almost never
Depressive symptoms (Mental health inventory) During the past month, how much of the time were you a happy person? All of the time, most of the time, a good bit of the time, some of the time, a little of the time, none of the time Same as PUMA
  During the past month, how much of the time have you felt calm and peaceful? All of the time, most of the time, a good bit of the time, some of the time, a little of the time, none of the time Same as PUMA
  During the past month, how much of the time have you been a very nervous person? All of the time, most of the time, a good bit of the time, some of the time, a little of the time, none of the time Same as PUMA
  During the past month, how much of the time have you felt downhearted and blue? All of the time, most of the time, a good bit of the time, some of the time, a little of the time, none of the time Same as PUMA
  During the past month, how much of the time did you feel so down in the dumps that nothing could cheer you up? All of the time, most of the time, a good bit of the time, some of the time, a little of the time, none of the time Same as PUMA