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Table 2 Micronutrient intake (mean % RNI) and percentage change in RNI over the 2 month study period by diet group for individuals with data recorded at baseline and at follow-up

From: Commercial weight loss diets meet nutrient requirements in free living adults over 8 weeks: A randomised controlled weight loss trial

  Atkins Wt Watchers Slimfast R Conley Control
  Baseline 2 m Baseline 2 m Baseline 2 m Baseline 2 m Baseline 2 m
n 30 45 34 30 26
Vitamin A           
Mean 182 175 128 104 119 203 158 105 136 118
SEM 35 47 10 9 11 58 21 14 17 13
%difference
(95%CI)
4
(-67,75)
-23
(-84,39)
80
(12,148)
-54
(-125,17)
-49
(-125,26)
P-value 0.91 0.47 0.02 0.14 0.19
Thiamin           
Mean 223 146 240 323 198 250 235 449 274 178
SEM 34 9 40 91 15 16 37 250 65 15
%difference
(95%CI)
-96
(-283,90)
98
(-68,264)
37
(-141,215)
208
(14,402)
-70
(-267,128)
P-value 0.31 0.25 0.68 0.40 0.49
Riboflavin           
Mean 158 138 161 128 147 167 169 151 143 134
SEM 9 11 7 7 7 12 11 8 7 8
%difference
(95%CI)
-19
(-36,-3)
-30
(-44,-16)
18
(3,34)
-14
(-30,3)
-9
(-27,8)
P-value 0.02 <0.00 0.02 0.10 0.29
Niacin           
Mean 310 353 314 253 301 257 321 284 307 283
SEM 14 29 12 10 12 14 13 11 20 18
%difference
(95%CI)
44
(8,79)
-55
(-96,-25)
-52
(-86,-18)
-33
(-69,3)
-18
(-56,19)
P-value 0.02 <0.001 0.003 0.07 0.34
Folate           
Mean 139 93 132 116 125 133 138 133 126 114
SEM 9 8 8 5 7 7 10 9 8 7
%difference
(95%CI)
-42
(-57,-26)
-13
(-26,0)
6
(-9,21)
-2
(-18,14)
-8
(-25,8)
P-value <0.00 0.05 0.41 0.998 0.34
Vitamin C           
Mean 224 132 242 224 248 326 309 379 275 205
SEM 23 19 21 21 29 69 39 57 40 42
%difference
(95%CI)
-89
(-178,19)
-13
(-90,64)
65
(-21,151)
107
(17,197)
-78
(-174,19)
P-value 0.06 0.74 0.14 0.02 0.11
Calcium           
Mean 125 92 130 87 133 139 138 113 123 111
SEM 8 7 6 4 11 6 10 15 10 8
%difference
(95%CI)
-33
(-51,-11)
-39
(-58,-20)
2
(-19,24)
-22
(-44,1)
-22
(-46,1)
P-value 0.004 <0.00 0.82 0.06 0.06
Magnesium           
Mean 106 75 112 84 106 104 115 97 102 95
SEM 6 7 5 3 4 4 4 4 4 6
%difference
(95%CI)
-31
(-41,-21)
-25
(-34,-17)
-3
(-12,7)
-16
(-26,-6)
-5
(-15,6)
P-value <0.001 <0.001 0.56 0.002 0.38
potassium           
Mean 96 67 98 77 95 88 104 88 93 84
SEM 5 4 5 4 4 4 4 4 4 4
%difference
(95%CI)
-28
(-37,-19)
-19
(-27,-12)
-8
(-17,0)
-12
(-21,-3)
-8
(-17,2)
P-value <0.001 <0.001 0.05 0.007 0.11
iron           
Mean 136 91 121 97 111 130 126 110 116 104
SEM 11 9 10 9 8 9 9 8 11 9
%difference
(95%CI)
-43
(-59,-28)
-24
(-37,-11)
17
(2,31)
-16
(-31,0)
-11
(-27,5)
P-value <0.001 <0.001 0.03 0.05 0.18
zinc           
Mean 119 139 113 88 117 196 123 96 118 103
SEM 6 9 4 4 5 18 5 4 8 6
%difference
(95%CI)
15
(-4,35)
-24
(-41,-7)
74
(55,92)
-26
(-45,-6)
-12
(-33,9)
P-value 0.13 0.005 <0.001 0.01 0.25
selenium           
Mean 100 149 116 86 97 97 103 79 93 87
SEM 6 41 13 7 5 4 5 5 7 12
%difference
(95%CI)
49
(18,79)
-25
(-51,1)
-2
(-31,27)
-27
(-57,4)
-6
(-39,26)
P-value 0.002 0.06 0.89 0.119 0.70