Xuxi Zhang

Table 2 HbA 1c values and related data of intervention group (IG) and control group (CG) at baseline and follow ‐ up intervals Study Baseline HbA1c % (mmol/mol) Interventio n duration (months) Follow ‐ up intervals (months) Follow ‐ up HbA1c % (mmol/mol) IG CG IG CG N Mean SD N Mean SD N Mean SD N Mean SD 1 [18] 148 10.14 (87) 2.01 (22) 151 9.84 (84) 1.95 (21.3) 6 0 122 8.98 (75) 2 (21.9) 114 9.55 (81) 2.30 (25.1) 2 [27] 24 7.70 (61) 1.20 (13.1) 22 7.40 (57) 1.10 (12) 3 0 20 7.20 (55) 1.10 (12) 18 7.70 (61) 1.40 (15.3) 3 [28] 186 6.70 (50) 1.48 (16.2) 159 6.74 (50) 1.38 (15.1) 1.5 4.5 † 161 6.59 (49) 1.48 (16.2) 133 6.57 (48) 1.38 (15.1) 4 [32] 75 8.21 (66) 2.20 (24.0) 75 7.71 (61) 1.49 (16.3) 6 ‐ 3 73 7.75 (61) 2.00 (21.9) 70 7.84 (62) 1.70 (18.6) 0 71 7.76 (61) 1.87 (20.4) 70 8.01 (64) 1.80 (19.7) 5 [16] 154 8.04 (64) 2.11 (23.1) 166 8.31 (67) 1.67 (18.3) 1.25 1.75 154 7.68 (60) 1.37 (15.0) 166 7.59 (59) 1.67 (18.3) 6 [30] 89 7.30 (56) 1.30 (14.2) 118 7.50 (58) 1.40 (15.3) 1.75 10.25 86 7.60 (60) 1.20 (13.1) 108 7.60 (60) 1.30 (14.2) 7 [20] 66 7.10 (54) 1.50 (16.4) 78 7.30 (56) 1.50 (16.4) 12 ‐ 6 92 6.60 (49) 0.90 (9.8) 105 7.00 (53) 1.10 (12.0) 0 93 6.80 (51) 1.30 (14.2) 104 7.00 (53) 1.10 (12.0) 8 [31] 219 7.44 (58) 2.00 (21.9) 198 7.38 (57) 1.87 (20.4) 6 0 179 7.03 (53) 2.00 (21.9) 173 7.33 (57) 1.87 (20.4) 9 [23] 187 7.20 (55) 1.40 (15.3) 201 7.20 (55) 1.20 (13.1) 24 0 165 7.10 (54) 1.10 (12.0) 170 7.10 (54) 1.20 (13.1) 10 [24] 104 10.50 (91) 1.70 (18.6) 103 10.30 (89) 1.70 (18.6) 4 0 64 9.00 (75) 1.90 (20.8) 81 9.10 (76) 1.90 (20.8) 6 56 9.10 (76) 2.00 (21.9) 74 9.70 (83) 2.30 (25.1) 11 [29] 90 8.40 (68) 1.10 (12.0) 97 8.70 (72) 1.30 (14.2) 6 0 78 8.00 (64) 1.50 (16.4) 86 7.90 (63) 1.10 (12.0) 12 [19] 90 8.80 (73) 1.45 (15.8) 90 8.80 (73) 1.45 (15.8) 12 0 78 7.20 (55) 1.35 (14.8) 78 7.90 (63) 1.58 (17.3) 13 [15] 105 9.70 (83) 2.09 (22.8) 106 9.76 (83) 2.23 (24.4) 12 ‐ 9 92 8.77 (72) 2.03 (22.2) 87 9.19 (77) 2.29 (25.0) ‐ 6 86 8.81 (73) 2.11 (23.1) 83 9.28 (78) 1.76 (19.2) 0 82 8.85 (73) 1.76 (19.2) 75 9.42 (79) 1.54 (16.8) 6 79 8.77 (72) 1.93 (21.1) 69 9.32 (78) 1.76 (19.2) 14 [22] 40 7.02 (53) 0.58 (6.3) 40 6.91 (52) 0.54 (5.9) 3 0 40 6.10 (43) 0.60 (6.6) 40 6.14 (44) 0.64 (7.0) 15 [14] 73 8.35 (68) 1.26 (13.8) 71 8.23 (66) 1.22 (13.3) 24 0 59 7.64 (60) 1.10 (12.0) 62 8.33 (68) 1.14 (12.5) 16 [25] 25 8.90 (74) 1.59 (17.4) 25 8.45 (69) 1.71 (18.7) 6 0 24 8.73 (72) 1.74 (19.0) 18 8.50 (69) 2.25 (24.6) 17 [21] 38 9.80 (84) 1.80 (19.7) 39 9.90 (85) 1.60 (17.5) 6 0 37 8.72 (72) 1.80 (19.7) 39 9.89 (85) 1.60 (17.5) 18 [13] 60 8.20 (66) 2.20 (24.0) 56 7.80 (62) 1.70 (18.6) 6 0 49 7.50 (58) 2.20 (24.0) 47 7.30 (56) 1.70 (18.6) 6 42 7.60 (60) 2.20 (24.0) 41 7.40 (57) 1.70 (18.6) 12 37 7.60 (60) 2.20 (24.0) 32 7.50 (58) 1.70 (18.6) 19 [17] 312 8.20 (66) 1.70 (18.6) 316 8.20 (66) 1.60 (17.5) 12 0 296 7.90 (63) 1.53 (16.7) 290 7.91 (63) 1.51 (16.5) 20 [26] 125 8.02 (64) 1.32 (14.4) 119 7.93 (63) 1.40 (15.3) 6 0 113 7.73 (61) 1.32 (14.4) 103 8.22 (66) 1.74 (19.0) † The 10.5 months follow ‐ up of this study was for IG only, therefore we did not included the results of 10.5 months follow ‐ up in this meta ‐ analysis. 6 139 Peer support among adults with type 2 diabetes