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Table 3 Quality assessment of the studies included using the Newcastle-Ottawa Scale (NOS)

From: Association between supportive interventions and healthcare utilization and outcomes in patients on long-term prescribed opioid therapy presenting to acute healthcare settings: a systematic review and meta-analysis

Author

Representativeness of exposed cohort

Selection of non-exposed cohort

Ascertainment of harm reduction

Outcome of interest absent at start of study

Comparability of cohorts

Assessment of outcome with independency

Adequacy of follow-up length

Alburaih (2018) [33]

*

 

*

*

**

*

*

Alexandridis (2017) [11]

*

*

*

*

 

*

*

Alexandridis (2018) [34]

*

*

*

*

 

*

*

Allen (2016) [36]

*

*

*

*

 

*

*

Fulton-Kehoe (2015) [37]

*

*

*

*

*

*

*

Ghobadi (2018) [38]

*

*

*

*

 

*

*

Gugelmann (2013) [39]

*

*

*

  

*

*

Hartung (2018) [40]

*

*

*

*

*

*

*

Jurecska (2012) [41]

       

Kahler (2017) [42]

*

*

*

*

**

*

*

Maughan (2015) [43]

*

*

*

*

 

*

 

Olsen (2016) [44]

*

*

*

*

 

*

*

Pace (2017) [45]

*

*

*

*

 

*

*

Svenson (2007) [46]

*

*

*

*

 

*

*

Whiteside (2017) [47]

*

*

*

*

 

*

 
  1. A maximum score of 9 is possible. A score of 0 to 3 represent low quality; 4 to 6 represent moderate quality; 7 to 9 represent high quality.
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BMC Emergency Medicine

ISSN: 1471-227X

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