Figure 2From: Midlife insomnia and subsequent mortality: the Hordaland health study Unadjusted hazard-ratios of mortality risk associated with insomnia, stratified by sex and sleep duration during 13-15 years follow-up of the Hordaland Health Study (1997-1999). Error bars represent 95% confidence intervals. Note that y-axis is on a logarithmic scale.Back to article page