Recall of age of weaning and other breastfeeding variables

Table 3 Breast pain, nipple cracks or sores, and mastitis during the first 3 months after the baby's birth, and breast pumping before and after weaning: Initial interviews every 3 weeks until 12 weeks post-partum, and re-interview 1–3.5 years post-partum

	Reported During Initial Interviews (3, 6, 9, or 12 weeks post-partum)
	Yes		No
	Re-interview		Re-interview
Symptom/Illness	Yes	No	Yes	No	Sensitivity^a	Specificity^b	Cohen's Kappa	McNemar's Test p-value
Any breast pain ^c	67	24	27	18	74%	40%	0.14	0.780
Any cracks or sores ^c	45	35	7	47	56%	87%	0.40**	< 0.001
Mastitis ^d	53	13	2	72	80%	97%	0.78**	0.007
Mastitis Dx in person ^d,e	16	4	7	26	80%	79%	0.57**	0.549
Pumped before weaning ^f	42	20	9	36	68%	80%	0.46**	0.061
Pumped after weaning ^g	6	6	13	36	50%	74%	0.19	0.167

^a Percentage of women reporting this symptom at re-interview, out of those originally reporting it.
^b Percentage of women not reporting this symptom at re-interview, out of those not originally reporting it.
* p < 0.05 ** p < 0.01
^c Women with the "bad skip" or otherwise incomplete prospective data who had not reported the condition in the existing interviews were excluded.
^d All women with the "bad skip" (n = 44) are excluded. None of those women had reported mastitis prior to the bad skip.
^e Includes only women who answered the question on mastitis at both initial interview and re-interview.
^f Women who stopped breastfeeding in the first week are excluded.
^g Women who stopped breastfeeding in the week of the interview were excluded because data after weaning were not available.

ISSN: 1746-4358