|
Study ID
|
First Trimester
|
Second Trimester
|
Third Trimester
|
Delivery
|
---|
| |
N=
|
Mean
|
Confidence Interval
|
N=
|
Mean
|
Confidence Interval
|
N=
|
Mean
|
Confidence Interval
|
N=
|
Mean
|
Confidence Interval
|
---|
Haemoglobin (g/L) a
|
Baker (2009)
|
404
|
↑122
|
121, 123
| | | |
362
|
↓108
|
107, 109
| | | |
Chang (2003)
|
445
|
↑121
|
121, 122
|
319
|
↑112
|
112, 114
|
836
|
↓107
|
107, 109
| | | |
Dawson (2000) a
| | | |
21
|
↑124
|
123, 125
|
21
|
↑115
|
114, 116
|
20
|
↑114
|
111, 112
|
Dawson (2000) b
| | | |
20
|
↑125
|
124, 126
|
20
|
↑119
|
118, 120
|
21
|
↑116
|
112, 114
|
Dawson (2000) a
| | | | | | |
21
|
↑114
|
113, 115
| | | |
Dawson (2000) b
| | | | | | |
20
|
↑120
|
119, 121
| | | |
Gadowsky (1995)
| | | | | | |
50
|
↑119
|
115, 123
| | | |
Iannotti (2005)
| | | |
35
|
↔111
|
107, 115
|
70
|
↔107
|
104, 110
| | | |
McGuire Davies (2010)
| | | |
78
|
↑118
|
118, 118
|
76
|
↓107
|
107, 108
| | | |
Meier (2002) a
| | | |
20
|
↑125
|
122, 129
|
15
|
↑123
|
119, 128
| | | |
Meier (2002) b
| | | |
17
|
↑128
|
124, 132
|
16
|
↑117
|
112, 123
| | | |
Meier (2002) a
| | | |
19
|
↑116
|
112, 120
| | | | | | |
Meier (2002) b
| | | |
16
|
↑113
|
110, 116
| | | | | | |
Rycel (2009)
| | | | | | | | | |
102
|
↑120
|
120, 229
|
Rycel (2009)
| | | | | | | | | |
102
|
↓103
|
103, 103
|
Young (2010)
| | | |
48
|
↑113
| | | | |
62
|
↑117
|
113, 121
|
Ferritin (μg/L or ng/ml) b
|
Gadowsky (1995)
| | | |
50
|
↓7.4
|
5.7, 9.1
| | | | | | |
Iannotti (2005)
| | | |
44
|
↑33
|
26.8, 40.6
|
59
|
↔15
|
12.6, 17.8
| | | |
Meier (2002) a
| | | |
19
|
↑42
|
31.3, 52.8
|
15
|
↔25
|
14.6, 35.4
| | | |
Meier (2002) b
| | | |
17
|
↑57
|
36.5, 77.5
|
15
|
↓6.8
|
5.2, 8.5
| | | |
Meier (2002) a
| | | |
19
|
↑46
|
24, 68.8
| | | | | | |
Meier (2002) b
| | | |
16
|
↓10
|
7.9, 13
| | | | | | |
Young (2010)
| | | |
81
|
↔16
|
12.9, 20.1
| | | |
88
|
↔17
|
14.9, 20.3
|
Haematocrit (g/L) c
|
Chang (2003)
|
445
|
↑36
|
35.7, 36.3
|
319
|
↔33
|
32.7, 33.3
|
836
|
↓32
|
31.8, 32.2
| | | |
Gadowsky (1995)
| | | | | | |
50
|
↑36
|
34.8, 37.2
| | | |
Iannotti (2005)
| | | |
35
|
↔33
|
32, 34
|
70
|
↓32
|
31.3, 32.7
| | | |
Rycel (2009)
| | | | | | | | | |
102
|
34
|
34.6, 34.8
|
Rycel (2009)
| | | | | | | | | |
102
|
↓31
|
31.4, 31.6
|
Zinc μmol/L-1 d
|
Castillo-Duran (2001) a
|
249
|
↑11.9
|
11.7, 12.1
| | | |
249
|
↑10.9
|
10.7, 11.1
| | | |
Castillo-Duran (2001) b
|
258
|
↑11.7
|
11.5, 11.9
| | | |
258
|
↑10.9
|
10.7, 11.1
| | | |
Castillo-Duran (2001) a
| | | | | | |
249
|
↑10.5
|
10.3, 10.7
| | | |
Castillo-Duran (2001) b
| | | | | | |
258
|
↑10.2
|
10, 10.4
| | | |
Chan (2006)
| | | | | | | | | |
23
|
↑26.3
|
23.2, 29.4
|
Mistry (2014) a
| | | | | | |
107
|
↑9.71
|
8.8, 10.5
| | | |
Mistry (2014) b
| | | | | | |
19
|
↑10.8
|
7.8, 13.9
| | | |
Magnesium mmol/l e
|
Chan (2006)
| | | | | | | | | |
23
|
↑0.99
|
0.9, 1.1
|
Phosphorous mg/dl f
|
Chan (2006)
| | | | | | | | | |
23
|
↑5
|
4, 6
|
Copper μg/dl g
|
Mistry (2014) a
| | | | | | |
107
|
↑206
|
1991, 2128
| | | |
Mistry (2014) b
| | | | | | |
19
|
↑196
|
1712, 2207
| | | |
Selenium μg/L h
|
Dawson (2000) a
| | | |
21
|
↓49
|
46, 52
|
21
|
↓55
|
52.9, 57.1
|
21
|
↑114
|
108.9, 119.1
|
Dawson (2000) b
| | | |
20
|
↓44
|
39.6, 48.4
|
20
|
↓53
|
50.8, 55.2
|
20
|
↓55
|
50.2, 59.8
|
Dawson (2000) a
| | | |
21
|
↓50
|
46.2, 53.8
|
21
|
↔85
|
76.9, 93.1
| | | |
Dawson (2000) b
| | | |
20
|
↓44
|
39.6, 48.4
|
20
|
↓62
|
57.2, 66.8
| | | |
Mistry (2014) a
| | | | | | |
107
|
↓65
|
62.7, 67.5
| | | |
Mistry (2014) b
| | | | | | |
19
|
↓49
|
45.9, 52.9
| | | |
Red blood cell folate (nmol/l) i
|
Baker (2009)
| | | | | | |
266
|
↑647
|
616, 680
| | | |
Serum folate (nmol/l) j
|
Baker (2009)
| | | | | | |
291
|
↑12
|
12, 14
| | | |
Chan (2006)
| | | | | | | | | |
23
|
↔13
|
10, 17
|
Vitamin A (μg/dL)
|
Chan (2006)
| | | | | | | | | |
23
|
↑38
|
31, 45
|
B12 (pmol/l) k
|
Baker (2009)
| | | | | | |
293
|
↑177
|
169, 185
| | | |
Chan (2006)
| | | | | | | | | |
23
|
↑265
|
216, 315
|
Gadowsky (1995)
| | | | | | |
50
|
↑170
|
146, 194
| | | |
Homocysteine (μmol/L) l
|
Baker (2009)
| | | | | | |
293
|
7.9
|
7.6, 8.2
| | | |
Gadowsky (1995)
| | | | | | |
50
|
6.1
|
3, 9
| | | |
25OHD (nmol/L) m
|
Baker (2009)
| | | | | | |
263
|
↑33
|
30.4, 35.8
| | | |
Chan (2006)
| | | | | | | | | |
23
|
↑57
|
48, 67
|
Ginde (2010)
| | | | | | | | | | | | |
McGuire Davies (2010)
| | | |
44
|
↑52
|
46, 58
|
36
|
↑56
|
50, 63
| | | |
O’Brien (2003)
| | | | | | |
23
|
↑50
|
41, 60
| | | |
Young (2012)
| | | | | | | | | |
171
|
↑54
|
51, 59
|
- a Target value 110 g/L, b Target value 15 μg/L, c Target value33 g/L, d Target value 6.12 μmol/L-1, e Target value 0.9 mmol/L, f Target value 2.5 mg/dl, g Target value 63.7 μg/dl, h Target value 90 μg/L, i Target value 340 nmol/L, j Target value 20 μg/dl, k Target value 150pmol/L, l Target value less than 13 μmol/L, m Target value 25 nmol/L, ↑ Study mean higher than reference value (p < 0.05), ↔ Study mean not different to reference value (p < 0.05), ↓ Study mean lower than reference value (p < 0.05)