Supplemental Table 2. The relationship between frequency of having breakfast and median serum concentrations of sdLDL-C in female subjects.

Female Subjects	Frequency of having breakfast					P Value†
	BE n=8,550	3-5/week n=797	1-2/week n=341	Rarely n=604	ANOVA P value§	BE vs 3-5/ week	BE vs 1-2/ week	BE vs Rarely	3-5/week vs 1-2/ week	3-5/week vs rarely	1-2/week vs rarely
sdLDL-C, mg/dL‡	24.9 (12.8)	24.9 (14.2)	26.8 (14.2)	25.4 (13.7)	0.010	0.097	0.056	0.816	0.361	0.652	0915
sdLDL-C/LDL-C ratio‡	0.209 (0.065)	0.215 (0.080)	0.219 (0.083)	0.220 (0.086)	＜0.001	＜0.001	0.034	0.001	0.996	0.732	0.932

Data are expressed as median (interquartile range).

^§P value for comparison across the groups was determined by one-way analysis of variance. P value ＜0.05 was considered statistically significant.

^†P value for comparison between individual groups, using Tukey post-hoc analysis for equally distributed variables and Games-Howell post-hoc analysis for non-equally distributed variables. P value ＜0.01 was considered statistically significant.

^‡Variable was log-transformed prior to formal statistical analysis.

BE, breakfast eaters who consumed (had) breakfast almost every day; LDL-C, low-density lipoprotein cholesterol; Rarely, breakfast skippers who rarely consumed (had) breakfast; sdLDL-C, small dense low-density; lipoprotein cholesterol; 1-2/week, breakfast skippers who consumed (had) breakfast once or twice a week; 3-5/w, breakfast skippers who consumed (had) breakfast 3-5 times a week