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Intervenciones en el estilo de vida para la gota crónica

Appendices

Appendix 1. CENTRAL search strategy

#1 MeSH descriptor Gout explode all trees

#2 gout*:ti,ab

#3 (#1 OR #2)

#4 MeSH descriptor Ethanol explode all trees

#5 ethanol:ti,ab

#6 MeSH descriptor Alcohol‐Related Disorders explode all trees

#7 MeSH descriptor Alcohol Drinking, this term only

#8 alcohol*:ti,ab

#9 MeSH descriptor Exercise explode all trees

#10  MeSH descriptor Exercise Therapy explode all trees

#11  MeSH descriptor Exercise Movement Techniques explode all trees

#12  MeSH descriptor Physical Education and Training explode all trees

#13  MeSH descriptor Physical Fitness, this term only

#14  MeSH descriptor Physical Exertion, this term only

#15  MeSH descriptor Sports explode all trees

#16  exercis*:ti,ab

#17  sport*:ti,ab

#18  (physical* next (fit* or exert* or activ*)):ti,ab

#19  (run* or jog* or walk*):ti,ab

#20  (swim* or cycl* or bicycl*):ti,ab

#21  train*:ti,ab

#22  kinesi?therap*:ti,ab

#23  ((weight or muscle*) next (strength* or resistance)):ti,ab

#24  endurance:ti,ab

#25  MeSH descriptor Tobacco explode all trees

#26  MeSH descriptor Tobacco Use Disorder, this term only

#27  MeSH descriptor Tobacco Use Cessation explode all trees

#28  MeSH descriptor Tobacco Smoke Pollution explode all trees

#29  MeSH descriptor Nicotine, this term only

#30  smok*:ti,ab

#31  (cigarette* or cigar* or pipe*):ti,ab

#32  (#4 OR #5 OR #6 OR #6 OR #7 OR #8 OR #9 OR #10 OR #11 OR #12 OR #13 OR #14 OR #15 OR #16 OR #17 OR #18 OR #19 OR #20 OR #21 OR #22 OR #23 OR #24 OR #25 OR #26 OR #27 OR #28 OR #29 OR #30 OR #31)

#33  MeSH descriptor Weight Loss explode all trees

#34  weight loss:ti,ab

#35  (weight near/2 (lo* or reduc* or eliminat*)):ti,ab

#36  ((body mass index or bmi) near/3 (los* or reduc* or decreas* or low*)):ti,ab

#37  (Waist circumference near/2 (reduc* or low* or small*)):ti,ab

#38  (Waist size near/2 (reduc* or low* or small*)):ti,ab

#39  energy next restrict*:ti,ab

#40  (calor* near/2 (restrict* or reduc* or low*)):ti,ab

#41  MeSH descriptor Anti‐Obesity Agents explode all trees

#42  (appetite near/2 suppress*):ti,ab

#43 orlistat:ti,ab

#44 xenical:ti,ab

#45 alli:ti,ab

#46 tetrahydrolipstatin:ti,ab

#47 phentermine:ti,ab

#48 phenyl‐tertiary‐butylamine:ti,ab

#49 Ionamin:ti,ab

#50 adipex‐P:ti,ab

#51 anoxine‐AM:ti,ab

#52 duromine:ti,ab

#53 metermine:ti,ab

#54 mirapront:ti,ab

#55 obephen:ti,ab

#56 obestin‐30:ti,ab

#57 phentremene:ti,ab

#58 phentrol:ti,ab

#59 phenterex:ti,ab

#60 phentromin:ti,ab

#61 "pro‐fast SA":ti,ab

#62 redusa:ti,ab

#63 panbesy:ti,ab

#64 "phentermine trenker":ti,ab

#65 Obenix:ti,ab

#66 Oby‐trim:ti,ab

#67 Teramine:ti,ab

#68 Zantryl:ti,ab

#69 Sinpet:ti,ab

#70 Supremin:ti,ab

#71 Umine:ti,ab

#72 Weltmine:ti,ab

#73 Aplenzin:ti,ab

#74 (#33 OR #34 OR #35 OR #36 OR #37 OR #38 OR #39 OR #40 OR #41 OR #42 OR #43 OR #44 OR #45 OR #46 OR #47 OR #48 OR #49 OR #50 OR #51 OR #52 OR #53 OR #54 OR #55 OR #56 OR #57 OR #58 OR #59 OR #60 OR #61 OR #62 OR #63 OR #64 OR #65 OR #66 OR #69 OR #70 OR #71 OR #72 OR #73)

#75 MeSH descriptor Diet explode all trees

#76 diet*:ti,ab

#77 MeSH descriptor Nutrition Therapy explode all trees

#78 (lacto‐vegetarian* or lacto vegetarian* or vegetarian* or non‐vegetarian*):ti,ab

#79 non near/2 vegetarian*:ti,ab

#80 vegan*:ti,ab

#81 (Cretan or Mediterranean):ti,ab

#82 MeSH descriptor Fasting, this term only

#83 fast*:ti,ab

#84 (protein near/2 (restrict* or reduc* or low* or elim*)):ti,ab

#85 (purine near/2 (restrict* or reduc* or low* or elim*)):ti,ab

#86 (fat near/2 (restrict* or reduc* or low* or elim)):ti,ab

#87 (triglyceride near/2 (restrict* or reduc* or low* or elim*)):ti,ab

#88 (cholesterol near/2 (restrict* or reduc* or low* or elim*)):ti,ab

#89 (diet near/3 (reduc* or low* or restrict* or elim*)):ti,ab

#90 (#75 OR #76 OR #77 OR #78 OR #78 OR #79 OR #80 OR #81 OR #82 OR #83 OR #84 OR #85 OR #86 OR #87 OR #88 OR #89)

#91 MeSH descriptor Dairy Products explode all trees

#92 (milk or cheese* or yog?urt or dairy):ti,ab

#93 MeSH descriptor Milk, this term only

#94 MeSH descriptor Cultured Milk Products, this term only

#95 (#91 OR #92 OR #93 OR #94)

#96 MeSH descriptor Sucrose explode all trees

#97 MeSH descriptor Fructose, this term only

#98 (sucrose* or lactose* or glucose* or fructose* or glycerine* or lycerine* or dextrose* or aspartame* or polycose* or sacchar* or sugar*):ti,ab

#99 (sweet* near/6 (solution* or tast*)):ti,ab

#100 (Diet* near/3 (drink* or beverage*)):ti,ab

#101 (soft near/2 (drink* or beverage*)):ti,ab

#102 (soda or sodas):ti,ab

#103 (#96 OR #97 OR #98 OR 99 OR #100 OR #101 OR #102)

#104 MeSH descriptor Coffee, this term only

#105 MeSH descriptor Caffeine, this term only

#106 (coffee or caffiene or caffeinated or decaffeinated):ti,ab

#107 (#104 OR #105 OR #106)

#108 MeSH descriptor Life Style explode all trees

#109 (life near/2 (style* or change$*or event*)):ti,ab

#110 lifestyle*:ti,ab

#111 MeSH descriptor Social Support, this term only

#112 "social support":ti,ab

#113 MeSH descriptor Relaxation explode all trees

#114 MeSH descriptor Relaxation Therapy, this term only

#115 relax*:ti,ab

#116 MeSH descriptor Self Efficacy, this term only

#117 (self next (efficac* or help or manag* or care)):ti,ab

#118 MeSH descriptor Health Promotion explode all trees

#119 MeSH descriptor Health Education explode all trees

#120 (health next (promot* or educat*)):ti,ab

#121 (motivat* next (therap* or interview*)):ti,ab

#122 (#108 OR #109 OR #110 OR #111 OR #112 OR #113 OR #114 OR #115 OR #115 OR #116 OR #117 OR #118 OR #119 OR #120 OR #121)

#123 (#32 OR #74 OR #90 OR #95 OR #107 OR #122)

#124 (#3 AND #123)

Appendix 2. MEDLINE search strategy

1. exp gout/

2. gout$.tw.

3. 1 or 2

4. exp life style/

5. (life adj2 (style$ or change$ or event$)).tw.

6. lifestyle$.tw.

7. social support/

8. social support.tw.

9. exp relaxation/ or relaxation therapy/

10. relax$.tw.

11. self efficacy/

12. (self adj (efficac$ or help or manag$ or care)).tw.

13. exp health promotion/

14. exp health education/

15. (health adj (promot$ or educat$)).tw.

16. (motivat$ adj (therap$ or interview$)).tw.

17. or/4‐16

18. exp Weight Loss/

19. weight loss.tw.

20. (weight adj2 (lo$ or reduc$ or eliminat$)).tw.

21. ((body mass index or bmi) adj3 (los$ or reduc$ or decreas$ or low$)).tw.

22. (Waist circumference adj2 (reduc$ or low$ or small$)).tw.

23. (Waist size adj2 (reduc$ or low$ or small$)).tw.

24. energy restrict$.tw.

25. (calor$ adj2 (restrict$ or reduc$ or low$)).tw.

26. exp Anti‐Obesity Agents/

27. (appetite adj2 suppress$).tw.

28. orlistat.tw.

29. xenical.tw.

30. alli.tw.

31. tetrahydrolipstatin.tw.

32. phentermine.tw.

33. phenyl‐tertiary‐butylamine.tw.

34. Ionamin.tw.

35. adipex‐P.tw.

36. anoxine‐AM.tw.

37. duromine.tw.

38. metermine.tw.

39. mirapront.tw.

40. obephen.tw.

41. obestin‐30.tw.

42. phentremene.tw.

43. phentrol.tw.

44. phenterex.tw.

45. phentromin.tw.

46. pro‐fast SA.tw.

47. redusa.tw.

48. panbesy.tw.

49. phentermine trenker.tw.

50. Obenix.tw.

51. Oby‐trim.tw.

52. Teramine.tw.

53. Zantryl.tw.

54. Sinpet.tw.

55. Supremin.tw.

56. Umine.tw.

57. Weltmine.tw.

58. Aplenzin.tw.

59. or/18‐58

60. exp diet/

61. diet$.tw.

62. exp Nutrition Therapy/

63. (lacto‐vegetarian$ or lacto vegetarian$ or vegetarian$ or non‐vegetarian$).tw.

64. (non adj2 vegetarian$).tw.

65. vegan$.tw.

66. (Cretan or Mediterranean).tw.

67. Fasting/

68. fast$.tw.

69. (protein adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

70. (purine adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

71. (fat adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

72. (triglyceride adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

73. (cholesterol adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

74. (diet adj3 (reduc$ or low$ or restrict$ or elim$)).tw.

75. or/60‐74

76. exp Dairy Products/

77. (milk or cheese$ or yog?urt or dairy).tw.

78. milk/ or cultured milk products/

79. or/76‐78

80. exp Sucrose/

81. Fructose/

82. (sucrose$ or lactose$ or glucose$ or fructose$ or glycerine$ or lycerine$ or dextrose$ or aspartame$ or polycose$ or sacchar$ or sugar$).tw.

83. (sweet$ adj6 (solution$ or tast$)).tw.

84. (Diet$ adj3 (drink$ or beverage$)).tw.

85. (soft adj2 (drink$ or beverage$)).tw.

86. (sugar adj2 free adj2 (drink$ or beverage$)).tw.

87. (soda or sodas).tw.

88. or/80‐87

89. Coffee/

90. Caffeine/

91. (coffee or caffiene or caffeinated or decaffeinated).tw.

92. or/89‐91

93. exp Ethanol/

94. ethanol.tw.

95. exp Alcohol‐Related Disorders/

96. Alcohol Drinking/

97. alcohol$.tw.

98. or/93‐97

99. exp exercise/

100. exp Exercise Therapy/

101. exp Exercise Movement Techniques/

102. exp "Physical Education and Training"/

103. Physical Fitness/

104. Physical Exertion/

105. exp sports/

106. exercis$.tw.

107. sport$.tw.

108. (physical$ adj (fit$ or exert$ or activ$)).tw.

109. (run$ or jog$ or walk$).tw.

110. (swim$ or cycl$ or bicycl$).tw.

111. train$.tw.

112. kinesi?therap$.tw.

113. ((weight or muscle$) adj (strength$ or resistance)).tw.

114. endurance$.tw.

115. or/99‐114

116. exp Tobacco/

117. "Tobacco Use Disorder"/

118. exp "Tobacco Use Cessation"/

119. Tobacco Smoke Pollution/

120. Nicotine/

121. smok$.tw.

122. (cigarette$ or cigar$ or pipe$).tw.

123. Nicotinic Agonists/

124. (nicotine adj (replacement or patch$ or gum or nasal)).tw.

125. nrt.tw.

126. nicorette.tw.

127. Nicotrol.tw.

128. Nicoderm$.tw.

129. Habitrol.tw.

130. Bupropion/

131. Bupropion.tw.

132. Amfebutamone.tw.

133. Aplenzin.tw.

134. Budeprion.tw.

135. Buproban.tw.

136. Butrew.tw.

137. Buxon.tw.

138. champix.tw.

139. Clorprax.tw.

140. Dosier.tw.

141. Elontril.tw.

142. Mondrian.tw.

143. Nicotex.tw.

144. Prexaton.tw.

145. Quomem.tw.

146. Voxra.tw.

147. Wellbutrin.tw.

148. Zetron.tw.

149. Zyban.tw.

150. Zyntabac.tw.

151. varenicline.tw.

152. exp hypnosis/

153. hypno$.tw.

154. exp counseling/

155. counsel$.tw.

156. or/116‐155

157. or/17,59,75,79,88,92,98,115,156

158. 3 and 157

159. randomized controlled trial.pt.

160. controlled clinical trial.pt.

161. randomized.ab.

162. placebo.ab.

163. drug therapy.fs.

164. randomly.ab.

165. trial.ab.

166. groups.ab.

167. or/159‐166

168. (animals not (humans and animals)).sh.

169. 167 not 168

170. 158 and 169

Appendix 3. EMBASE search strategy

1. exp gout/

2. gout$.tw.

3. 1 or 2

4. exp life style/

5. Lifestyle modification/

6. (life adj2 (style$ or change$ or event$)).tw.

7. lifestyle$.tw.

8. Social support/

9. social support.tw.

10. Relaxation training/

11. relax$.tw.

12. Self concept/ or exp self care/

13. (self adj (efficac$ or help or manag$ or care)).tw.

14. Health promotion/

15. exp health education/

16. (health adj (promot$ or educat$)).tw.

17. (motivat$ adj (therap$ or interview$)).tw.

18. 4 or 17

19. weight reduction/

20. (weight adj2 (lo$ or reduc$ or eliminat$)).tw.

21. ((body mass index or bmi) adj3 (los$ or reduc$ or decreas$ or low$)).tw.

22. (Waist circumference adj2 (reduc$ or low$ or small$)).tw.

23. (Waist size adj2 (reduc$ or low$ or small$)).tw.

24. energy restrict$.tw.

25. (calor$ adj2 (restrict$ or reduc$ or low$)).tw.

26. antiobesity agent/

27. (appetite adj2 suppress$).tw.

28. orlistat.tw.

29. xenical.tw.

30. alli.tw.

31. tetrahydrolipstatin.tw.

32. phentermine.tw.

33. phenyl‐tertiary‐butylamine.tw.

34. Ionamin.tw.

35. adipex‐P.tw.

36. anoxine‐AM.tw.

37. duromine.tw.

38. metermine.tw.

39. mirapront.tw.

40. obephen.tw.

41. obestin‐30.tw.

42. phentremene.tw.

43. phentrol.tw.

44. phenterex.tw.

45. phentromin.tw.

46. pro‐fast SA.tw.

47. redusa.tw.

48. panbesy.tw.

49. phentermine trenker.tw.

50. Obenix.tw.

51. Oby‐trim.tw.

52. Teramine.tw.

53. Zantryl.tw.

54. Sinpet.tw.

55. Supremin.tw.

56. Umine.tw.

57. Weltmine.tw.

58. amfebutamone/

59. Aplenzin.tw.

60. Zyban.tw.

61. or/19‐60

62. exp diet/

63. diet$.tw.

64. exp diet therapy/

65. (lacto‐vegetarian$ or lacto vegetarian$ or vegetarian$ or non‐vegetarian$).tw.

66. (non adj2 vegetarian$).tw.

67. vegan$.tw.

68. (Cretan or Mediterranean).tw.

69. fast$.tw.

70. (protein adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

71. (purine adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

72. (fat adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

73. (triglyceride adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

74. (cholesterol adj2 (restrict$ or reduc$ or low$ or elim$)).tw.

75. or/62‐73

76. exp dairy product/

77. (milk or cheese$ or yog?urt or dairy).tw.

78. milk/

79. or/76‐78

80. sucrose/

81. fructose/

82. (sucrose$ or lactose$ or glucose$ or fructose$ or glycerine$ or lycerine$ or dextrose$ or aspartame$ or polycose$ or sacchar$ or sugar$).tw.

83. (sweet$ adj6 (solution$ or tast$)).tw.

84. (Diet$ adj3 (drink$ or beverage$)).tw.

85. (soft adj2 (drink or beverage)).tw.

86. (sugar adj2 free adj2 (drink$ or beverage$)).tw.

87. (soda or sodas).tw.

88. or/80‐87

89. coffee/

90. caffeine/

91. (coffee or caffiene or caffeinated or decaffeinated).tw.

92. or/89‐91

93. alcohol/

94. ethanol.tw.

95. alcoholism/

96. drinking behavior/

97. alcohol$.tw.

98. or/93‐97

99. exp exercise/

100. exp kinesiotherapy/

101. physical education/

102. fitness/

103. exp sports/

104. exercis$.tw.

105. sport$.tw.

106. (physical$ adj (fit$ or exert$ or activ$)).tw.

107. (run$ or jog$ or walk$).tw.

108. (swim$ or cycl$ or bicycl$).tw.

109. train$.tw.

110. kinesi?therap$.tw.

111. ((weight or muscle$) adj (strength$ or resistance)).tw.

112. endurance.tw.

113. or/99‐112

114. tobacco/

115. tobacco dependence/

116. smoking cessation/

117. exp "smoking and smoking related phenomena"/

118. nicotine/

119. smok$.tw.

120. (cigarette$ or cigar$ or pipe$).tw.

121. nicotine replacement therapy/

122. (nicotine adj (replacement or patch$ or gum or nasal)).tw.

123. nrt.tw.

124. nicorette.tw.

125. Nicotrol.tw.

126. Nicoderm$.tw.

127. Habitrol.tw.

128. amfebutamone/

129. Bupropion.tw.

130. Amfebutamone.tw.

131. Aplenzin.tw.

132. Budeprion.tw.

133. Buproban.tw.

134. Butrew.tw.

135. Buxon.tw.

136. champix.tw.

137. Clorprax.tw.

138. Dosier.tw.

139. Elontril.tw.

140. Mondrian.tw.

141. Nicotex.tw.

142. Prexaton.tw.

143. Quomem.tw.

144. Voxra.tw.

145. Wellbutrin.tw.

146. Zetron.tw.

147. Zyban.tw.

148. Zyntabac.tw.

149. varenicline.tw.

150. hypnosis/

151. hypno$.tw.

152. exp counseling/

153. counsel$.tw.

154. or/114‐153

155. or/18,61,75,79,88,92,98,113,154

156. 3 and 155

157. (random$ or placebo$ or single blind$ or double blind$ or triple blind$).ti,ab.

158. RETRACTED ARTICLE/

159. 157 or 158

160. (animal$ not human$).sh,hw.

161. (book or conference paper or editorial or letter or review).pt. not exp randomized controlled trial/

162. (random sampl$ or random digit$ or random effect$ or random survey or random regression).ti,ab. not exp randomized controlled trial/

163. 159 not (160 or 161 or 162)

164. 156 and 163

Study flow diagram.
Figuras y tablas -
Figure 1

Study flow diagram.

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 2

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.

Forest plot of comparison: 1 SMP (GMP/G600) versus control (SMP/lactose), outcome: 1.1 Number of gout flares per month, after 3 months SMP (GMP/G600) versus control (SMP/lactose).
Figuras y tablas -
Figure 3

Forest plot of comparison: 1 SMP (GMP/G600) versus control (SMP/lactose), outcome: 1.1 Number of gout flares per month, after 3 months SMP (GMP/G600) versus control (SMP/lactose).

Forest plot of comparison: 1 SMP (GMP/G600) versus control (SMP/lactose), outcome: 1.2 Physical Function.
Figuras y tablas -
Figure 4

Forest plot of comparison: 1 SMP (GMP/G600) versus control (SMP/lactose), outcome: 1.2 Physical Function.

Forest plot of comparison: 1 SMP (GMP/G600) versus control (SMP/lactose), outcome: 1.3 Participant withdrawals due to adverse events.
Figuras y tablas -
Figure 5

Forest plot of comparison: 1 SMP (GMP/G600) versus control (SMP/lactose), outcome: 1.3 Participant withdrawals due to adverse events.

Comparison 1 SMP (GMP/G600) versus control (SMP/lactose), Outcome 1 Number of gout flares per month, after 3 months SMP (GMP/G600) versus control (SMP/lactose).
Figuras y tablas -
Analysis 1.1

Comparison 1 SMP (GMP/G600) versus control (SMP/lactose), Outcome 1 Number of gout flares per month, after 3 months SMP (GMP/G600) versus control (SMP/lactose).

Comparison 1 SMP (GMP/G600) versus control (SMP/lactose), Outcome 2 Physical Function.
Figuras y tablas -
Analysis 1.2

Comparison 1 SMP (GMP/G600) versus control (SMP/lactose), Outcome 2 Physical Function.

Comparison 1 SMP (GMP/G600) versus control (SMP/lactose), Outcome 3 Participant withdrawals due to adverse events.
Figuras y tablas -
Analysis 1.3

Comparison 1 SMP (GMP/G600) versus control (SMP/lactose), Outcome 3 Participant withdrawals due to adverse events.

Summary of findings for the main comparison. Skim milk enriched with GMP/G600 compared to skim milk & lactose powder for chronic gout

Skim milk enriched with GMP/G600 compared to skim milk & lactose powder for chronic gout

Patient or population: patients with chronic gout
Settings: outpatient, community
Intervention: Skim milk enriched with GMP/G600
Comparison: skim milk & lactose powder

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Skim milk & lactose powder

Skim milk enriched with GMP/G600

Acute gout attack frequency
participant self‐report using gout flare diary
Follow‐up: 3 months

The mean acute gout attack frequency in the control groups was
0.6997 Number of gout flares per month

The mean acute gout attack frequency in the intervention groups was
0.21 lower
(0.76 lower to 0.34 higher)

120
(1 study)

⊕⊕⊝⊝
low1

Not statistically significant2

Participant withdrawals due to adverse events
participant and study investigator reported
Follow‐up: 3 months

Study population

RR 1.27
(0.53 to 3.03)

120
(1 study)

⊕⊕⊝⊝
low1

Not statistically significant3

138 per 1000

175 per 1000
(73 to 417)

Moderate

Joint pain reduction
10‐point Likert scale (0 is no pain)
Follow‐up: 3 months

The mean joint pain reduction in the control groups was
‐0.942

The mean joint pain reduction in the intervention groups was
1.03 lower
(1.96 to 0.1 lower)

120
(1 study)

⊕⊕⊝⊝
low1

Absolute risk difference = ‐10% (‐20% to ‐1%). Relative percentage change = ‐39% (‐74% to ‐4%). NNTB = 10 (5 to 100)2

Tophus regression ‐ not measured

See comment

See comment

Not estimable

See comment

Not measured

Physical function
HAQ‐II. Scale from: 0 to 3; 0 is minimal loss of function.
Follow‐up: 3 months

The mean physical function in the control groups was
0.11

The mean physical function in the intervention groups was
0.03 lower
(0.14 lower to 0.08 higher)

120
(1 study)

⊕⊕⊝⊝
low1

Absolute risk difference = ‐1% (‐5% to 3%). Relative percentage change = ‐13% (‐58% to 33%)

NNT n/a, not statistically significant2

Serum urate normalisation4 ‐ not reported

See comment

See comment

Not estimable4

See comment

Not reported

Serious adverse events
participant and study investigator reported
Follow‐up: 3 months

38 per 1000

50 per 1000
(9 to 287)

RR 1.33
(0.23 to 7.66)

120
(1 study)

⊕⊕⊝⊝
low1

Gastrointestinal AEs (diarrhoea, nausea and flatulence) reported most commonly. SAE related to hospital admissions ‐ none were due to the study products.3

*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio;

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1 There was selective reporting of post‐hoc comparisons between skim milk powder enriched with GMP/G600 and one of the two study controls (lactose) in relation to change in gout attack frequency from baseline
2 Number needed to benefit (NNTB) = N/A when result is not statistically significant. NNT for continuous outcomes calculated using the Wells calculator software available from the CMSG editorial office.
3 Number needed to harm (NNTH) = N/A when result is not statistically significant. NNT for dichotomous outcomes calculated using Cates NNT calculator (http://nntonline.net/ebm/visualrx/try.asp).
4 Results only presented graphically

Figuras y tablas -
Summary of findings for the main comparison. Skim milk enriched with GMP/G600 compared to skim milk & lactose powder for chronic gout
Comparison 1. SMP (GMP/G600) versus control (SMP/lactose)

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Number of gout flares per month, after 3 months SMP (GMP/G600) versus control (SMP/lactose) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Subtotals only

2 Physical Function Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Subtotals only

3 Participant withdrawals due to adverse events Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

Figuras y tablas -
Comparison 1. SMP (GMP/G600) versus control (SMP/lactose)