Table 9.

Effects of maternal ethnicity, weight, height, body mass index (BMI), parity, and age on head circumference (HC)

Maternal factor	Mean	95%CI		SD	p-value
Ethnicity					0.89
Fulani	136.59	135.21	137.97	36.6
Kirdi	136.46	135.13	137.78	40.4
Weight (centiles)					0.22
< 10	135.47	132.66	138.27	39.4
10–90	136.30	135.23	137.37	38.2
90+	139.45	136.43	142.46	39.0
Height (centiles)					0.58
< 10	136.10	133.17	139.03	37.5
10–90	137.05	135.95	138.14	39.6
90+	134.00	131.46	136.55	39.6
BMI (centiles)					0.20
< 10	135.68	132.62	138.73	32.9
10–90	136.42	135.35	137.49	38.8
90+	138.19	135.16	141.22	38.1
Parity					0.27
0	132.01	129.21	134.81	41.8
1	131.25	128.68	133.82	36.3
2	132.64	129.26	136.02	40.9
3	135.78	132.38	139.17	40.8
4	132.05	128.30	135.81	40.0
5+	134.50	131.04	137.97	34.0
Age					0.34
-19	134.81	130.45	139.16	45.6
20–24	134.26	131.85	136.66	38.1
25–29	132.09	130.00	134.17	36.7
30–34	132.44	129.52	135.36	43.1
35+	131.60	127.09	136.11	33.9

Analysis of variance (ANOVA), adjustments for gestational age.

Parity and age were adjusted for each other.