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Mattresses for Chronic Back or Neck Pain: A Review of the Clinical Effectiveness and Guidelines [Internet]. Ottawa (ON): Canadian Agency for Drugs and Technologies in Health; 2014 May 14.

Cover of Mattresses for Chronic Back or Neck Pain: A Review of the Clinical Effectiveness and Guidelines

Mattresses for Chronic Back or Neck Pain: A Review of the Clinical Effectiveness and Guidelines [Internet].

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APPENDIX 6Summary of Findings of the Included RCT

Main Relevant Study FindingsAuthor’s Conclusions
Bergholdt et al., 20086
Differences from start to end of trial.

Change in Lower Back Pain (mean (0–10))[IQR] †, ‡
Waterbed  Foam Mattress   Firm Mattress
−0.4[−2,0]*    0.1[−1,1]      0.5[0,1]**

Change in Leg Pain (mean (0–10))[IQR]
Waterbed  Foam Mattress   Firm Mattress
−0.5[−1,1]   −0.3[−1,1]   0.4[0,1]**

Change in ADL (mean (0–10))[IQR]
Waterbed  Foam Mattress   Firm Mattress
0[−4,2]     1[−2,2]      2[0,2]**

Change in Sleep (hours)[IQR] †, ‡
Waterbed  Foam Mattress   Firm Mattress
0.6[−0.5,1]  0.3[−0.5,0.5]  −0.4[−0.5,0]**

Change within mattress type over 1 month
* no influence statistically significant
** worst-case statistically significant

Difference between waterbed or foam mattress and firm mattress
† no influence statistically significant
‡ worst-case statistically significant

No significant differences were found between the water bed and foam mattress.

There were a significant number of drop-outs during this study. The number of drop-outs was significantly different between the three groups. The majority of drop-outs stopped because of more pain or less sleep. Therefore the data was analyzed both as if the drop-outs had “no influence” and given baseline scores at follow-up,(*,†) or a “worst-case” scenario where drop-outs were given the worst 90th percentile scores of those fulfilling the study (**,‡).
“A waterbed and a body contour foam mattress generally influenced back symptoms, function, and sleep more positively than a hard mattress, but the differences were small.” (pp. 708)

ADL= activities of daily living; IQR= interquartile range;

Copyright © 2014 Canadian Agency for Drugs and Technologies in Health.

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Bookshelf ID: NBK263374

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