Table 3. Distribution of 820 women with breast cancer and 1548 control women by marginal quintiles of flavonoid intake categories.

	Quintilea
	1 (lowest)	2	3	4	5 (highest)	Xb linear trend
Flavanones
Cases	162	167	158	178	154	0.29
Controls	311	307	315	296	319
Quintile median (mg day−1)	9.1	20.3	33.5	44.4	67.1
Flavan-3-ols
Cases	169	174	170	158	140	−2.10
Controls	300	295	300	311	329
Quintile median (mg day−1)	9.0	16.0	23.5	30.7	45.2
Flavonols
Cases	179	167	153	159	151	−1.65
Controls	289	302	315	310	317
Quintile median (mg day−1)	9.7	15.9	19.4	24.1	30.6
Flavones
Cases	197	187	158	146	131	−4.63
Controls	276	287	315	328	342
Quintile median (mg day−1)	0.3	0.3	0.4	0.7	1.1
Anthocyanidins
Cases	186	251	55	170	149	−0.83
Controls	319	459	157	286	315
Quintile median (mg day−1)	5.1	12.0	20.9	40.7	81.4
Isoflavones
Cases	172	149	174	158	166	0.71
Controls	301	329	295	316	307
Quintile median (mg day−1)	0.01	0.2	0.2	0.3	0.8

^aNonadditivity is accounted for by a few missing values.

^bX values are age-adjusted and are interpretable as standard normal deviates.