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Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 1 Atopic eczema in first 12‐18 months.
Figures and Tables -
Analysis 1.1

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 1 Atopic eczema in first 12‐18 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 2 Asthma in first 18 months.
Figures and Tables -
Analysis 1.2

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 2 Asthma in first 18 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 3 Allergic rhinitis/conjunctivitis in first 18 months.
Figures and Tables -
Analysis 1.3

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 3 Allergic rhinitis/conjunctivitis in first 18 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 4 Allergic urticaria in first 18 months.
Figures and Tables -
Analysis 1.4

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 4 Allergic urticaria in first 18 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 5 Any atopic condition in first 18 months.
Figures and Tables -
Analysis 1.5

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 5 Any atopic condition in first 18 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 6 Positive skin prick test to egg at 6 months.
Figures and Tables -
Analysis 1.6

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 6 Positive skin prick test to egg at 6 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 7 Positive skin prick test to egg at 18 months.
Figures and Tables -
Analysis 1.7

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 7 Positive skin prick test to egg at 18 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 8 Positive skin prick test to milk at 6 months.
Figures and Tables -
Analysis 1.8

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 8 Positive skin prick test to milk at 6 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 9 Positive skin prick test to milk at 18 months.
Figures and Tables -
Analysis 1.9

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 9 Positive skin prick test to milk at 18 months.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 10 Detectable cord blood IgE (>= .125 U/ml).
Figures and Tables -
Analysis 1.10

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 10 Detectable cord blood IgE (>= .125 U/ml).

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 11 Cord blood IgE > 1 U/ml.
Figures and Tables -
Analysis 1.11

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 11 Cord blood IgE > 1 U/ml.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 12 Preterm birth.
Figures and Tables -
Analysis 1.12

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 12 Preterm birth.

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 13 Gestational weight gain (as % of prepregnancy weight).
Figures and Tables -
Analysis 1.13

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 13 Gestational weight gain (as % of prepregnancy weight).

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 14 Birth weight (g).
Figures and Tables -
Analysis 1.14

Comparison 1 Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring, Outcome 14 Birth weight (g).

Comparison 2 Maternal antigen avoidance during lactation in women at high risk for atopic offspring, Outcome 1 Incidence of atopic eczema in first 12‐18 months.
Figures and Tables -
Analysis 2.1

Comparison 2 Maternal antigen avoidance during lactation in women at high risk for atopic offspring, Outcome 1 Incidence of atopic eczema in first 12‐18 months.

Comparison 2 Maternal antigen avoidance during lactation in women at high risk for atopic offspring, Outcome 2 Severity of atopic eczema (score).
Figures and Tables -
Analysis 2.2

Comparison 2 Maternal antigen avoidance during lactation in women at high risk for atopic offspring, Outcome 2 Severity of atopic eczema (score).

Comparison 2 Maternal antigen avoidance during lactation in women at high risk for atopic offspring, Outcome 3 Birth weight (g).
Figures and Tables -
Analysis 2.3

Comparison 2 Maternal antigen avoidance during lactation in women at high risk for atopic offspring, Outcome 3 Birth weight (g).

Comparison 3 Maternal antigen avoidance during lactation for treating atopic eczema in infants, Outcome 1 Eczema area score.
Figures and Tables -
Analysis 3.1

Comparison 3 Maternal antigen avoidance during lactation for treating atopic eczema in infants, Outcome 1 Eczema area score.

Comparison 3 Maternal antigen avoidance during lactation for treating atopic eczema in infants, Outcome 2 Eczema activity score.
Figures and Tables -
Analysis 3.2

Comparison 3 Maternal antigen avoidance during lactation for treating atopic eczema in infants, Outcome 2 Eczema activity score.

Comparison 1. Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Atopic eczema in first 12‐18 months Show forest plot

3

372

Risk Ratio (M‐H, Random, 95% CI)

0.94 [0.67, 1.33]

2 Asthma in first 18 months Show forest plot

2

334

Risk Ratio (M‐H, Random, 95% CI)

2.22 [0.39, 12.67]

3 Allergic rhinitis/conjunctivitis in first 18 months Show forest plot

1

163

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

4 Allergic urticaria in first 18 months Show forest plot

1

163

Risk Ratio (M‐H, Fixed, 95% CI)

1.01 [0.21, 4.87]

5 Any atopic condition in first 18 months Show forest plot

1

163

Risk Ratio (M‐H, Fixed, 95% CI)

0.76 [0.42, 1.38]

6 Positive skin prick test to egg at 6 months Show forest plot

2

340

Risk Ratio (M‐H, Random, 95% CI)

0.58 [0.32, 1.05]

7 Positive skin prick test to egg at 18 months Show forest plot

2

335

Risk Ratio (M‐H, Random, 95% CI)

0.95 [0.52, 1.74]

8 Positive skin prick test to milk at 6 months Show forest plot

2

340

Risk Ratio (M‐H, Random, 95% CI)

1.15 [0.29, 4.51]

9 Positive skin prick test to milk at 18 months Show forest plot

2

335

Risk Ratio (M‐H, Random, 95% CI)

0.86 [0.16, 4.59]

10 Detectable cord blood IgE (>= .125 U/ml) Show forest plot

2

287

Risk Ratio (M‐H, Random, 95% CI)

1.16 [0.94, 1.44]

11 Cord blood IgE > 1 U/ml Show forest plot

1

91

Risk Ratio (M‐H, Fixed, 95% CI)

2.81 [1.00, 7.90]

12 Preterm birth Show forest plot

2

236

Risk Ratio (M‐H, Random, 95% CI)

10.06 [0.53, 192.26]

13 Gestational weight gain (as % of prepregnancy weight) Show forest plot

1

164

Mean Difference (IV, Fixed, 95% CI)

‐3.0 [‐5.21, ‐0.79]

14 Birth weight (g) Show forest plot

2

236

Mean Difference (IV, Random, 95% CI)

‐83.45 [‐221.87, 54.97]

Figures and Tables -
Comparison 1. Maternal antigen avoidance in pregnancy in women at high risk for atopic offspring
Comparison 2. Maternal antigen avoidance during lactation in women at high risk for atopic offspring

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Incidence of atopic eczema in first 12‐18 months Show forest plot

3

194

Risk Ratio (M‐H, Random, 95% CI)

0.56 [0.36, 0.86]

2 Severity of atopic eczema (score) Show forest plot

2

168

Mean Difference (IV, Random, 95% CI)

‐11.05 [‐16.57, ‐5.52]

3 Birth weight (g) Show forest plot

1

26

Mean Difference (IV, Fixed, 95% CI)

‐100.0 [‐485.52, 285.52]

Figures and Tables -
Comparison 2. Maternal antigen avoidance during lactation in women at high risk for atopic offspring
Comparison 3. Maternal antigen avoidance during lactation for treating atopic eczema in infants

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Eczema area score Show forest plot

1

34

Mean Difference (IV, Fixed, 95% CI)

‐0.80 [‐4.43, 2.83]

2 Eczema activity score Show forest plot

1

34

Mean Difference (IV, Fixed, 95% CI)

‐1.40 [‐7.18, 4.38]

Figures and Tables -
Comparison 3. Maternal antigen avoidance during lactation for treating atopic eczema in infants