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Table 3 Quality Ratings Assigned to Studies by Outcome

From: The health impact of smokeless tobacco products: a systematic review

Health outcome

Good quality

Fair quality

Poor quality

Global

   

Mortality

1

0

3

Morbidity

2

0

3

Sub-total

3

0

6

AMEA

   

Mortality

0

1

1

Morbidity

2

12

16

Sub-total

2

13

17

Europe

   

Mortality

0

2

0

Morbidity

2

3

05

Sub-total

2

5

0

US

Mortality

3

1

0

Morbidity

0

2

2

Sub-total

3

3

2

Total

10

22

26

  1. Totals may reflect duplicated studies that examined more than one health outcome. Quality assigned as “good”, “fair” or “poor” utilizing NIH Quality Assessment Tools [8].
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Harm Reduction Journal

ISSN: 1477-7517