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Table 6 Summary of characteristics and results at 6 and 12 months for the included pre post trials

From: Primary health care-level interventions targeting health literacy and their effect on weight loss: a systematic review

Study (Year) Participants Interventions Follow up (months) Weight*/BMI** Pre mean Post mean Mean difference Within-group significance
Absetz 2007 [19] Location: Finland Setting: PHC % dropout: 9.4 12 Wt Male Female 100.0 (18.1) 86.0 (13.2) 98.5 (18.1) 85.5 (13.3) NR p < 0.01 NS
Risk factor: T2DM
Sex: 265 women, 87 men Comparison: Before and after
Age, mean (SD): 58 (4.3) women, 59 (3.7) men BMI Male Female 32.0 (5.3) 32.5 (4.6) 31.5 (5.2) 32.3 (4.7) NR p < 0.01 NS
Arrebola 2011 [20] Location: Spain Setting: PHC % dropout: 55 6 Wt 86.0 (15.6) 79.2 (13.4) NR p < 0.001
Risk factor: Nil BMI 32.0 (2.9) 29.4 (2.9) NR p < 0.001
Sex: 43 women, 17 men Comparison: Before and after
Age, mean (SD): 40 (9)
Gilis-Januszewska 2011 [24] Location: Poland Setting: PHC % dropout: 0 12 Wt 85.6 (16.1) 83.7 (15.9) 1.9 (5.0) p < 0.05
Risk factor: T2DM
Sex: 137 women, 38 men Comparison: Before and after
Age: NR BMI 31.7 (5.0) 31.0 (4.9) 0.6 (1.9) p < 0.05
Laatikainen 2007 [27] Location: Australia Setting: PHC % dropout: 23.8 12 Wt 91.7 (17.7) NR −2.5 (95% CI −3.19, −1.85) p < 0.05
Risk factor: T2DM
Sex: 172 women, 65 men Comparison: Before and after
Age, mean (SD): 56.7 (8.7) BMI 33.5 (5.9) NR −0.9 (95% CI −1.17, −0.69) p < 0.05
  1. Wt: Weight.
  2. BMI: Body mass index.
  3. *kg.
  4. **kg/m2.
  5. Mean (SD) unless specified otherwise.