The Pittsburgh Sleep Quality Index was used to assess sleep quality of adult Lifelines participants (section: Lifestyle & environment).
Note that the first 3 variables from the official PSQI were omitted here, because the same information could be derived from the Munich Chronotype Questionnnaire (MCTQ) also included in assessment 1B.
Other sleep-related data were collected using the Epworth Sleepiness Scale, the Composite Score of Morningness and the Chronic Sleep Reduction Questionnaire (CSRQ only for children).
Several sum scores on sleep behaviours are available for use.
Note that the PSQI for children was also performed in the context of an additional questionnaire on screen use and sleep quality (BLUQ).
Questions English | Questions Dutch | Code | Variable | Assessment | Age |
in the past month, on average how many hours of sleep did you get per night? (this number may differ from the number of hours you spent in bed.) | aan hoeveel uren slaap kwam u gemiddeld per nacht tijdens de afgelopen maand? (dit aantal kan verschillen van het aantal dat u in bed doorbracht) | psqi_hours_adu_q_04 | sleep4 | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you could not fall asleep within 30 minutes? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u niet in slaap kon vallen binnen 30 minuten? | psqi_fallingasleep_adu_q_05_a | sleep5a | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you woke up at night or early in the morning? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u 's nachts of in de vroege morgen wakker werd? | psqi_wakingup_adu_q_05_b | sleep5b | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you had to go to the toilet? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u naar het toilet moest gaan? | psqi_bathroom_adu_q_05_c | sleep5c | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you could not breathe easily? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u niet makkelijk kon ademhalen? | psqi_breathing_adu_q_05_d | sleep5d | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you coughed or snored loudly? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u luid hoestte of snurkte? | psqi_snoring_adu_q_05_e | sleep5e | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you were too cold? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u het te koud had? | psqi_toocold_adu_q_05_f | sleep5f | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you were too warm? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u het te warm had? | psqi_toowarm_adu_q_05_g | sleep5g | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you had nightmares? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u nachtmerries had? | psqi_nightmares_adu_q_05_h | sleep5h | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because you were in pain? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u pijn had? | psqi_pain_adu_q_05_i | sleep5i | 1B 3B | 18+ |
in the past month, how often did you have difficulty sleeping because of (an)other reason(s)? | hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u (een) andere reden(en) had? | psqi_otherproblem_adu_q_05_j | sleep5j | 1B 3B | 18+ |
if you have had difficulty sleeping in the past month because of another reason, what reason? | omschrijf reden: / hoe vaak had u tijdens de voorbije maand moeilijkheden met slapen omdat u (een) andere reden(en) had? | psqi_specification_adu_q_05_k | sleep5jtxt | 1B 3B | 18+ |
how would you rate your overall sleep quality during the past month? | hoe zou u uw globale slaapkwaliteit tijdens de afgelopen maand beoordelen? | psqi_quality_adu_q_06 | sleep6 | 1B 3B | 18+ |
in the past month, how often did you take medication (with or without a doctor's prescription) to help you sleep? | hoe vaak nam u gedurende de afgelopen maand medicijnen in (al dan niet voorgeschreven) als hulp bij het slapen? | psqi_medication_adu_q_07 | sleep7 | 1B 3B | 18+ |
in the past month, how often did you have difficulty staying awake during various activities, such as eating or participating in social activities? | hoe vaak had u het de voorbije maand moeilijk om wakker te blijven tijdens verschillende bezigheden, zoals eten of deelname aan sociale activiteiten? | psqi_stayawake_adu_q_08 | sleep8 | 1B 3B | 18+ |
to what extent did you have trouble carrying out your daily activities with enough enthusiasm in the past month? | in welke mate was het de afgelopen maand voor u een probleem om met voldoende enthousiasme uw dagelijkse activiteiten uit te voeren? | psqi_enthusiasm_adu_q_09 | sleep9 | 1B 3B | 18+ |
snored loudly / if you have a roommate or bed partner, ask him/her how often in the past month during your sleep you: | luid snurkte / indien u een kamergenoot of bedpartner heeft, vraag hem/haar hoe vaak u tijdens de afgelopen maand tijdens uw slaap: | psqi_bedpartner_adu_q_10_a | sleep10a | 1B 3B | 18+ |
had long pauses in breathing / if you have a roommate or bed partner, ask him/her how often in the past month during your sleep you: | lange adempauzes had / indien u een kamergenoot of bedpartner heeft, vraag hem/haar hoe vaak u tijdens de afgelopen maand tijdens uw slaap: | psqi_bedpartner_adu_q_10_b | sleep10b | 1B 3B | |
had twitching or kicking legs / if you have a roommate or bed partner, ask him/her how often in the past month during your sleep you: | trekkende of schoppende benen had / indien u een kamergenoot of bedpartner heeft, vraag hem/haar hoe vaak u tijdens de afgelopen maand tijdens uw slaap: | psqi_bedpartner_adu_q_10_c | sleep10c | 1B 3B | 18+ |
had periods of confusion / if you have a roommate or bed partner, ask him/her how often in the past month during your sleep you: | periodes van verwardheid had / indien u een kamergenoot of bedpartner heeft, vraag hem/haar hoe vaak u tijdens de afgelopen maand tijdens uw slaap: | psqi_bedpartner_adu_q_10_d | sleep10d | 1B 3B | 18+ |
had another type of restlessness / if you have a roommate or bed partner, ask him/her how often in the past month during your sleep you: | een andere rusteloosheid had / indien u een kamergenoot of bedpartner heeft, vraag hem/haar hoe vaak u tijdens de afgelopen maand tijdens uw slaap: | psqi_bedpartner_adu_q_10_e | sleep10e | 1B 3B | 18+ |
description of other type of restlessness / if you have a roommate or bed partner, ask him/her how often in the past month during your sleep you: | omschrijving van andere rusteloosheid / indien u een kamergenoot of bedpartner heeft, vraag hem/haar hoe vaak u tijdens de afgelopen maand tijdens uw slaap: | psqi_bedpartner_adu_q_10_e1 | sleep10etxt | 1B | 18+ |