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Table 5 Main characteristics of the studies selected for the systematic review and meta-analysis with oral health as exposure 2019

From: Dental caries and periodontal disease among people who use drugs: a systematic review and meta-analysis

author

Drug used by participants

Sample size

year

country

design

Quality of the evidence

Morio et al. [27]

Methamphetamine users

18

2008

USA

Case-control

High

Shetty et al. [54]

Methamphetamine users

571

2016

USA

Case-control

High

Rommel et al. [55]

Methamphetamine users

200

2016

Germany

Case-control

High

Thomson et al. [53].

Cannabis users

1015

2008

New Zealand

Cohort

High

Nives Protrka et al. [24]

Heroin users

200

2013

Croatia

Case-control

Moderate

Rooban et al. [48]

Heroin and Cannabis users

100

2008

India

Cross-section

Moderate

Reece [49]

Opiate users

233

2007

Australia

Cross-section

High

Kayal et al. [50]

Amphetamines

57

2014

Saudi Arabia

Cross-section

Moderate

D’Amore et al. [51]

Opioid and Marijuana users

563

2011

USA

Cross-section

High

Gupta et al. [52]

illicit drug users

126

2012

India

Cross-section

Moderate