Table 1.

Mean intakes¹ of plain, tap and bottled water (mL) among adults by socio-demographic group

	n	Total water as a beverage	Pairwise p-value	Tap water	Pairwise p-value	Bottled water	Pairwise p-value
All Adults	15702	1138 (16)	-	644 (13)	-	502 (13)	-
Age group
20-50	8389	1294 (22)	ref	700 (17)	ref	597 (16)	ref
51-70	4737	1020 (20)	<0.001	607 (18)	<0.001	431 (14)	<0.001
≥71	2576	669 (12)	<0.001	495 (10)	<0.001	181 (9)	<0.001
Gender
Men	7614	1153 (23)	0.30	660 (15)	0.12	509 (19)	0.73
Women	8088	1125 (14)	ref	628 (14)	ref	501 (12)	ref
Race/ethnicity
Non-Hispanic White	7610	1134 (19)	ref	703 (17)	ref	437 (12)	ref
Non-Hispanic Black	3173	1129 (23)	0.87	513 (18)	<0.001	617 (27)	<0.001
Mexican-American	2899	1095 (25)	0.23	383 (22)	<0.001	729 (33)	<0.001
Other Hispanic	1322	1208 (41)	0.10	455 (35)	<0.001	758 (48)	<0.001
Other race – including mixed race	698	1314 (96)	<0.001	692 (60)	0.86	606 (37)	<0.001
Family income-to-poverty ratio
<1	2905	1026 (33)	<0.001	603 (28)	<0.001	407 (21)	<0.001
1-1.99	3870	1088 (25)	<0.001	565 (22)	<0.001	542 (25)	0.27
2-3.49	3181	1115 (27)	<0.001	625 (22)	<0.001	505 (16)	0.86
≥3.5	4532	1223 (20)	ref	721 (17)	ref	509 (17)	ref

¹Values are survey-weighted means with standard errors in parentheses.