Measuring nightmare frequency: retrospective questionnaires versus prospective logs

J. Lancee; V.I. Spoormaker; G. Peterse; J. Van den Bout

doi:10.2174/1874620900801010026

Measuring nightmare frequency: retrospective questionnaires versus prospective logs

J. Lancee, V.I. Spoormaker, G. Peterse, J. Van den Bout

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Abstract

Retrospective measurements underestimate nightmare frequency, but little is known about how retrospective duration and attention for nightmares may affect this process. This study evaluates the differences between two retrospective durations, a prospective log, and a retrospective estimate after keeping this log. Forty-nine participants completed the SLEEP-50, kept a nightmare log, and estimated their nightmares after keeping a log. Paired t-tests showed that estimates of nightmare frequencies differed significantly from each other according to measurement type (p < .05). Prospective logs are the most accurate way of estimating nightmare frequency, possibly due to simply forgetting over time. For treatment studies relying solely on retrospective measurements, a short duration is recommended.

Original language	English
Pages (from-to)	26-28
Number of pages	3
Journal	The Open Sleep Journal
Volume	1
DOIs	https://doi.org/10.2174/1874620900801010026
Publication status	Published - 2008

Keywords

Nightmare frequency
retrospective estimate
prospective log

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abstract = "Retrospective measurements underestimate nightmare frequency, but little is known about how retrospective duration and attention for nightmares may affect this process. This study evaluates the differences between two retrospective durations, a prospective log, and a retrospective estimate after keeping this log. Forty-nine participants completed the SLEEP-50, kept a nightmare log, and estimated their nightmares after keeping a log. Paired t-tests showed that estimates of nightmare frequencies differed significantly from each other according to measurement type (p < .05). Prospective logs are the most accurate way of estimating nightmare frequency, possibly due to simply forgetting over time. For treatment studies relying solely on retrospective measurements, a short duration is recommended.",

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AU - Peterse, G.

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AB - Retrospective measurements underestimate nightmare frequency, but little is known about how retrospective duration and attention for nightmares may affect this process. This study evaluates the differences between two retrospective durations, a prospective log, and a retrospective estimate after keeping this log. Forty-nine participants completed the SLEEP-50, kept a nightmare log, and estimated their nightmares after keeping a log. Paired t-tests showed that estimates of nightmare frequencies differed significantly from each other according to measurement type (p < .05). Prospective logs are the most accurate way of estimating nightmare frequency, possibly due to simply forgetting over time. For treatment studies relying solely on retrospective measurements, a short duration is recommended.

KW - Nightmare frequency

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JO - The Open Sleep Journal

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Measuring nightmare frequency: retrospective questionnaires versus prospective logs

Abstract

Keywords

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