Online Table 1. Means (standard deviations) of Na intake (mg/day) from 46 food groups inJapanese men and women aged 40-59 of the INTERMAP Japan Studystratified by quartiles of 24-hr urinary Na excretion per body weight (mg/24hr/kg)

Food group / Q1 / Q2 / Q3 / Q4 / Trend P
Mean / (SD) / Mean / (SD) / Mean / (SD) / Mean / (SD)
Starchy foods
Rice / 6 / (4) / 7 / (4) / 7 / (4) / 8 / (6) / <0.001
Noodles (Japanese/Chinese) / 83 / (193) / 64 / (135) / 83 / (145) / 115 / (222) / 0.017
Bread / 195 / (207) / 188 / (186) / 125 / (150) / 138 / (170) / <0.001
Pasta, macaroni / 7 / (19) / 10 / (26) / 8 / (20) / 8 / (25) / 0.791
Other grain / 2 / (6) / 2 / (9) / 2 / (10) / 2 / (8) / 0.361
Protein foods
Fish, not salted / 81 / (91) / 87 / (79) / 83 / (81) / 92 / (80) / 0.187
Salted/canned fish / 320 / (365) / 390 / (432) / 367 / (386) / 508 / (498) / <0.001
Fish cakes / 109 / (155) / 138 / (175) / 131 / (161) / 159 / (193) / 0.003
Meat, not salted / 19 / (17) / 23 / (17) / 22 / (20) / 20 / (17) / 0.951
Ham, sausage / 97 / (125) / 124 / (166) / 118 / (152) / 105 / (154) / 0.698
Hamburgers / 4 / (29) / 6 / (39) / 9 / (52) / 3 / (30) / 0.969
Eggs / 51 / (49) / 49 / (37) / 49 / (43) / 48 / (38) / 0.402
Tofu / 4 / (9) / 5 / (11) / 5 / (10) / 6 / (15) / 0.040
Soy beans, other legumes / 5 / (19) / 3 / (11) / 5 / (14) / 5 / (19) / 0.864
Vegetables
Vegetables, boiled/stewed / 11 / (12) / 14 / (13) / 15 / (14) / 16 / (15) / <0.001
Vegetables, raw/grilled/stir fried / 12 / (41) / 13 / (37) / 17 / (60) / 19 / (64) / 0.064
Japanese pickles / 371 / (335) / 462 / (432) / 570 / (474) / 768 / (642) / <0.001
Sea algae / 19 / (49) / 23 / (66) / 21 / (50) / 20 / (38) / 0.872
Potatoes / 2 / (2) / 2 / (2) / 2 / (2) / 2 / (3) / <0.001
Mushrooms / 1 / (3) / 1 / (2) / 0 / (1) / 1 / (2) / 0.351
Soups
Miso soup / 239 / (228) / 305 / (240) / 347 / (258) / 411 / (290) / <0.001
Soup for use with noodles (Japanese/Chinese) / 236 / (314) / 267 / (298) / 293 / (293) / 260 / (313) / 0.248
Soup, western style / 20 / (52) / 28 / (56) / 26 / (66) / 31 / (77) / 0.074
Curry sauce, stew / 63 / (136) / 69 / (130) / 60 / (124) / 72 / (142) / 0.638
Other manufactured foods / 59 / (111) / 74 / (137) / 77 / (140) / 65 / (127) / 0.533
Condiments
Soy sauce / 681 / (448) / 808 / (508) / 833 / (492) / 903 / (556) / <0.001
Low-salt soy sauce / 37 / (93) / 45 / (134) / 50 / (140) / 37 / (109) / 0.852
Miso paste / 26 / (55) / 42 / (91) / 45 / (85) / 55 / (106) / <0.001
Mirin / 0 / (0) / 0 / (0) / 0 / (0) / 0 / (0) / 0.180
Salt / 366 / (251) / 410 / (256) / 413 / (277) / 401 / (302) / 0.154
Worcester sauce, ketchup / 52 / (83) / 66 / (101) / 58 / (84) / 65 / (93) / 0.210
Dressing, mayonnaise / 44 / (48) / 58 / (60) / 51 / (59) / 46 / (54) / 0.969
Fats and oils / 10 / (18) / 13 / (27) / 9 / (22) / 9 / (20) / 0.252
Spices / 8 / (14) / 11 / (20) / 9 / (16) / 10 / (17) / 0.397
Vinegar / 7 / (12) / 8 / (9) / 7 / (8) / 9 / (11) / 0.075
Sugar and sweeteners / 0 / (0) / 0 / (0) / 0 / (0) / 0 / (1) / 0.456
Dairy products and snacks
Milk and other dairy products / 89 / (81) / 82 / (70) / 73 / (83) / 74 / (72) / 0.010
Sweets / 36 / (50) / 34 / (50) / 28 / (36) / 31 / (40) / 0.114
Salty snacks / 26 / (51) / 23 / (48) / 25 / (50) / 27 / (44) / 0.831
Ice cream / 4 / (11) / 3 / (10) / 2 / (6) / 1 / (6) / <0.001
Fruit / 2 / (4) / 2 / (4) / 2 / (5) / 2 / (3) / 0.679
Beverages
Tea / 9 / (13) / 11 / (26) / 11 / (21) / 12 / (22) / 0.201
Coffee, cocoa / 12 / (32) / 9 / (22) / 11 / (24) / 12 / (28) / 0.781
Alcoholic beverages / 6 / (10) / 5 / (8) / 5 / (9) / 6 / (9) / 0.771
Sport drinks / 6 / (33) / 4 / (13) / 3 / (9) / 3 / (17) / 0.121
Other soft drinks / 4 / (13) / 4 / (15) / 3 / (9) / 2 / (7) / 0.007