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Table 3 Association between frequency of low back pain and sleep disturbance at the fourth time point

From: Low back pain is associated with sleep disturbance: a 3-year longitudinal study after the Great East Japan Earthquake

 

Frequency of low back pain

  
 

Total

Absence

1

2

3

4

P for trend

 

Participants

2,097

1,070

375

294

199

159

  

Sleep disturbance, n (%)

697 (33.2)

256 (23.9)

125 (33.3)

120 (40.8)

97 (48.7)

99 (62.3)

  

Crude OR (95%CI)

 

1 (Ref.)

1.59 (1.23–2.06)

2.19 (1.67–2.88)

3.02 (2.22–4.13)

5.25 (3.70–7.45)

< 0.001

 

Adjusted OR (95%CI)

 

1 (Ref.)

1.46 (1.10–1.95)

2.02 (1.49–2.74)

2.38 (1.67–3.40)

4.08 (2.74–6.06)

< 0.001

 
  1. Adjusted for sex, age, body mass index, living area, smoking habits, drinking habits, comorbid conditions, working status, walking time, living status, subjective economic condition, psychological distress, and social isolation. OR indicates odds ratio; CI, confidence interval.
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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