Table 1. Associations between the use of deodorant by the mother at 8m and by the partner during pregnancy and ABCC11 (rs17822931).

(a) Additive and recessive models
			Additive (copies of A allele)					Recessive (AA genotype)
	Ethnicity of parent	N	B	95% Confidence interval (CI)		P	Dev P	B	95% CI		P	Dev P
Maternal genotype
Use by mother 8m	Non-white	136	−1.52	−2.12	−0.92	1.5 × 10−6	0.8746	−2.64	−4.02	−1.26	0.0002	0.0021
	White	6,492	−0.37	−0.47	−0.28	1.8 × 10−14	5.7 × 10−11	−1.64	−1.98	−1.31	2.2 × 10−21	0.0007
Use by partner 12w	Non-white	115	−1.18	−1.99	−0.37	0.0046	0.1505	−1.09	−3.20	1.01	0.3051	0.0027
	White	4,952	0.01	−0.14	0.15	0.9040	0.1213	−0.33	−0.84	0.18	0.2026	0.3734
Child genotype
Use by mother 8m	Non-white	159	−1.06	−1.68	−0.43	0.0011	0.2683	−2.39	−3.89	−0.89	0.0019	0.1356
	White	7,281	−0.16	−0.25	−0.07	0.0004	0.8597	−0.32	−0.65	0.02	0.0640	0.0027
Use by partner 12w	Non-white	119	−1.43	−2.20	−0.67	0.0003	0.5595	−2.85	−4.69	−1.02	0.0026	0.0389
	White	5,563	−0.16	−0.30	−0.02	0.0235	0.6224	−0.41	−0.93	0.12	0.1306	0.0791

(b) Genotype model (effect for GG genotype constrained to be zero)
			GA genotype				AA genotype				Group
	Ethnicity of parent	N	B	95% CI		P	B	95% CI		P	P
Maternal genotype
Use by mother 8m	Non-white	136	−1.47	−2.39	−0.54	0.0021	−3.10	−4.46	−1.73	1.6 × 10−5	1.0 × 10−5
	White	6,492	−0.19	−0.30	−0.08	0.0007	−1.69	−2.03	−1.35	2.6 × 10−22	8.5 × 10−23
Use by partner 12w	Non-white	115	−1.79	−2.94	−0.63	0.0027	−1.45	−3.50	0.59	0.1610	0.0065
	White	4,952	0.08	−0.09	0.25	0.3734	−0.31	−0.82	0.20	0.2288	0.2988
Child genotype
Use by mother 8m	Non-white	159	−0.69	−1.59	0.22	0.1356	−2.59	−4.10	−1.07	0.0009	0.0027
	White	7,281	−0.16	−0.26	−0.06	0.0027	−0.35	−0.69	−0.02	0.0397	0.0020
Use by partner 12w	Non-white	119	−1.19	−2.32	−0.06	0.0389	−3.17	−5.00	−1.34	0.0009	0.0013
	White	5,563	−0.14	−0.30	0.02	0.0791	−0.44	−0.97	0.09	0.1032	0.0682

Abbreviations: m, months; w, weeks.Unadjusted linear regressions of deodorant usage on genotype. Effect sizes are the estimated change in frequency of deodorant use per week.

Dev P-value is a test of the deviation from the additive or recessive genetic model by comparison with the genotype model. The group test was a 2 d.f. test.