PNSS Completion Code or Record Linkage Errors
(Pre-2004 PNSS Record Layout)

Prenatal Only Records Containing Data in Postpartum Fields Criteria: More than 2% of prenatal only records contain data in postpartum fields. Postpartum field numbers and names that are edited include:
Field Numbers	Field Names
26	Positive or Negative Weight Gain
27	Total Weight Gain
36	Infant’s Date of Birth
37	Infant’s Sex
38	Number of Infants
39	Born Alive or Dead
40	Birthweight–Metric
41	Birthweight–English
42	Alive or Dead at Postpartum Visit
43	Currently Breastfeeding
44	Ever Breastfed
45	Formula Use
46	Infant ID –Numeric
47	Infant ID –Alpha
50	Woman’s Weight Metric - Postpartum Visit
52	Woman’s Weight English – Postpartum Visit
54	Hemoglobin –Postpartum Visit
56	Hematocrit–Postpartum Visit
58	Cigarettes/Day –Postpartum Visit
60	Smoking Changes –Postpartum Visit
62	Household Smoking–Postpartum Visit
64	Drink Days/Week –Postpartum Visit
66	Drinks/Day–Postpartum Visit
68	WIC Visit
70	Food Stamp–Postpartum Visit
72	Medicaid–Postpartum Visit
74	AFDC –Postpartum Visit

PNSS Completion Code or Record Linkage Errors (cont’d) Postpartum Only Records Containing Data in Prenatal Fields Criteria: More than 2% of postpartum only records contain data in prenatal fields. Prenatal field numbers and names that are edited include:
Field Numbers	Field Names
49	Woman’s Weight Metric–Initial Visit
51	Woman’s Weight English–Initial Visit
53	Hemoglobin–Initial Visit
55	Hematocrit–Initial Visit
57	Cigarettes/Day–Initial Visit
59	Smoking Changes–Initial Visit
61	Household Smoking–Initial Visit
63	Drink Days/Week–Initial Visit
65	Drinks/Day–Initial Visit
67	WIC Participation–Initial Visit
69	Food Stamp Participation–Initial Visit
71	Medicaid Participation–Initial Visit
73	AFDC Participation–Initial Visit

PNSS Completion Code or Record Linkage Errors (cont’d) Insufficient Prenatal Data for Complete or Prenatal Only Records Criteria: More than 10% of complete or prenatal only records have insufficient prenatal data defined as less than two prenatal fields containing data (other than unknown/known values. Prenatal field numbers and names that are edited include:
Field Numbers	Field Names
49	Woman’s Weight Metric–Initial Visit
51	Woman’s Weight English–Initial Visit
53	Hemoglobin–Initial Visit
55	Hematocrit–Initial Visit
57	Cigarettes/Day–Initial Visit
59	Smoking Changes–Initial Visit
61	Household Smoking–Initial Visit
63	Drink Days/Week–Initial Visit
65	Drinks/Day–Initial Visit

PNSS Completion Code or Record Linkage Errors (cont’d) Insufficient Postpartum Data for Complete or Postpartum Only Records Criteria: More than 10% of complete or postpartum only records have insufficient postpartum data defined as less than two postpartum fields containing data (other than unknown values. Postpartum field numbers and names that are edited include:
Field Numbers	Field Names
27	Total Weight Gain
37	Infant’s Sex
40	Birthweight–Metric
41	Birthweight–English
43	Currently Breastfeeding
50	Woman’s Weight Metric - Postpartum Visit
52	Woman’s Weight English – Postpartum Visit
54	Hemoglobin –Postpartum Visit
56	Hematocrit–Postpartum Visit
58	Cigarettes/Day –Postpartum Visit
60	Smoking Changes –Postpartum Visit
62	Household Smoking–Postpartum Visit
64	Drink Days/Week –Postpartum Visit
66	Drinks/Day–Postpartum Visit

PNSS Completion Code or Record Linkage Errors (cont’d) Duplicate Field Values on Complete Records Criteria: More than 90% of complete records show NO difference in values between the following field numbers and names. Zeroes for fields where zero is a valid value: fields 57, 58, 63, 64, 65, 66 are excluded from analysis. The field numbers and names that are edited include:

Field Numbers and Names

25/Pre-pregnancy Weight and 51/Woman’s Weight English–Initial Visit

49/Woman’s Weight Metric–Initial Visit and 50/Woman’s Weight Metric–Postpartum Visit

51/Woman’s Weight English–Initial Visit and 52/Woman’s Weight English–Postpartum Visit

53/Hemoglobin–Initial Visit and 54/Hemoglobin–Postpartum Visit

55/Hematocrit–Initial Visit and 56/Hematocrit–Postpartum Visit

57/Cigarettes/Day–Initial Visit and 58/ Cigarettes/Day–Postpartum Visit

63/Drink Days/Week–Initial Visit and 64/Drink/Days/Week–Postpartum Visit

65/Drinks/Day–Initial Visit and 66/Drinks/Day–Postpartum Visit