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Table 5 Quality of the reviews by type of health behaviour

From: The effectiveness of interventions to change six health behaviours: a review of reviews

Health
Behaviour
High quality
reviews
Well conducted
reviews
Reviews of
variable quality
Total
Type of evidence*
Potential for bias**
1
++
1&2
++
2
++
1
+
1&2
+
2
+
1
-
1&2
-
2
-
 
Smoking 8 3 0 14 10 1 6 3 3 48
Physical Activity 5 1 2 2 7 1 2 1 1 24
Alcohol 3 2 0 0 3 1 1 1 3 15
Healthy eating 0 0 0 1 12 0 0 1 0 13
Illicit drug use 1 1 0 0 0 0 0 1 1 4
Sexual risk taking 1 1 0 1 0 0 2 3 0 8
  1. Notes: columns are not totalled because some reviews were included in more than one health behaviour
  2. *Study designs included within the systematic reviews: 1 = RCT; 2 = non-RCT; 1&2 = include both study designs.
  3. ** ++ = low potential; - = high potential