Figure 7From: Pain in the lumbar, thoracic or cervical regions: do age and gender matter? A population-based study of 34,902 Danish twins 20–71 years of age Graph showing the number of days in the past year that Danish twin individuals aged 20 to 71 had mid back pain among those who did have mid back pain in the past year. Data are shown separately for men and women (N = 4,535).Back to article page