Factors in which there is not a balance of four references stating a positive or negative relation to NVP or HG

45.   FACTORS IN WHICH THERE IS NOT A BALANCE OF FOUR REFERENCES STATING A POSITIVE OR NEGATIVE RELATION TO NVP OR HG

 

Index No.

 

Total number of references on each subject

Total

Positive

Negative

EquivocalFor NVP

12.

Wanted or unwanted pregnancy.

 8

 5

2

 1

15.

Women who have had more pre-pregnancy motion sickness get NVP.

6

4

0

 2

17.

Alcohol consumption unrelated to the occurrence of NVP.

 5

 3

2

 0

18.

Maternal age. Younger age (up to 26 yrs) more likely to have increased symptoms of  NVP

27

13

3

11

19.

NVP or HG more common in nullipara (primigravida)

22

9

5

8

20.

Women’s initial weight NVP more in heavier women

10

3

3

5

25.

Previous unsuccessful pregnancy. (miscarriage, stillbirth, neo-natal death) increased NVP or HG. Four positive papers for HG

8

4

4

0

29.

Intra-uterine growth retardation associated with hyperemesis.

6

4

2

0

34.

Placental weight increased NVPassociated with heavier placenta.

5

2

3

0

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