Sleepiness of day workers and watchkeepers on board at high seas: a cross-sectional study.

ABSTRACT:

Objectives

To estimate the prevalence of sleepiness on duty among day workers and watchkeepers on board.

Design

Cross-sectional survey in a maritime field study.

Setting

10 shipping companies with container vessels under German management.

Participants

The whole crew (75 day workers and 123 watchkeepers) during 18 voyages on 18 different container ships.

Outcome measures

Sleepiness on duty and efficiency of sleep using pupillometry (in a cross-shift design) and the SenseWear armband activity monitor.

Results

The watchkeepers showed significantly shorter sleep periods than day workers (5.5 hours vs 5.8 hours). The average efficiency of sleep was 69.6% and significantly lower among watchkeepers (OR 0.48; 95% CI 0.26 to 0.88). 396 pupillometric exami

SUBMITTER: Oldenburg M 

PROVIDER: S-EPMC6624030 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature