Reliability of birth weight recall by parent or guardian respondents in a study of healthy adolescents

BMC Research Notes

Table 2 Correlation and median discrepancy between respondent reported and chart obtained birth weight overall and by participant characteristics

Variable	r	N	Median discrepancy	p-value*
Overall	0.92	236	38.4
Race				0.401
Black	0.92	133	35.4
White or non-black	0.91	103	40.0
Gender of child				0.260
Male	0.91	107	56.7
Female	0.93	129	28.3
Urban				0.254
Urban	0.91	109	21.8
Not urban	0.92	127	56.7
Body mass index percentile				0.993
≥ 85th percentile	0.90	83	28.3
< 85th percentile	0.91	153	42.5
Biological parent				0.166
Yes	0.92	222	34.5
No	0.74	14	99.2
Respondent type				0.004
Mother	0.93	205	28.3
Father	0.86	17	198.4
Other	0.74	14	99.2

* p-value testing if median discrepancy is significantly different between the categories

ISSN: 1756-0500