Table 3.

Summary Statistics for Iowa Fluoride Study Dietary Beverage Intakes for Three Representation Methods (Total oz/day) (n = 344)

Variable	DFS cluster	Method 1		Method 2				Method 3
		9.0 to 17.0 average		“9”*		“9”* to “13”† increment		“9”*		“13”†		“17”‡
		Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
100% Juice	1 – Low	2.72	2.29	2.77	3.00	−0.13	3.68	2.77	3.00	2.63	3.29	1.94	3.19
	2 – Medium	2.17	2.22	2.28	3.12	−0.36	2.43	2.28	3.12	1.92	3.06	1.49	2.11
	3 – High	1.72	1.44	1.66	2.10	0.18	2.50	1.66	2.10	1.84	2.17	1.17	2.31
	Combined	2.25	2.10	2.29	2.86	−0.13	2.97	2.29	2.86	2.16	2.95	1.57	2.62
Milk	1 – Low	13.50	6.54	12.34	6.36	1.92	7.16	12.34	6.36	14.26	8.43	13.52	9.82
	2 – Medium	11.64	7.13	11.81	7.71	−0.73	7.86	11.81	7.71	11.08	8.13	11.60	10.43
	3 – High	12.07	7.59	10.95	7.34	1.72	11.53	10.95	7.34	12.67	11.95	11.44	9.39
	Combined	12.44	7.08	11.77	7.14	0.90	8.84	11.77	7.14	12.68	9.48	12.26	9.95
Sugar-sweetened beverages	1 – Low	10.33	6.31	7.72	5.84	3.73	7.82	7.72	5.84	11.45	8.68	12.27	12.17
	2 – Medium	11.29	7.41	8.94	6.20	3.29	7.83	8.94	6.20	12.23	8.72	12.59	12.75
	3 – High	12.07	7.59	9.79	8.66	2.50	7.76	9.79	8.66	12.29	9.30	13.09	11.15
	Combined	11.15	7.09	8.72	6.87	3.24	7.80	8.72	6.87	11.96	8.85	12.61	12.09
Water and other sugar-free beverages	1 – Low	18.66	9.77	12.30	9.87	7.69	11.43	12.30	9.87	19.99	12.31	24.99	15.93
	2 – Medium	16.64	9.37	10.21	7.87	7.32	12.09	10.21	7.87	17.53	13.91	25.34	22.86
	3 – High	15.76	8.63	10.91	8.80	5.63	13.51	10.91	8.80	16.54	12.70	23.93	15.76
	Combined	17.14	9.38	11.17	8.91	7.00	12.25	11.17	8.91	18.16	13.06	24.83	18.66

^*“9”: Averaged questionnaire data collected at ages 9.0 and 9.5.

^†“13”: Averaged questionnaire data collected at ages 12.5, 13.0, and 13.5.

^‡“17”: Averaged questionnaire data collected at ages 16.5, 17.0, and 17.5.