Table 1.

Selected characteristics by sex-specific tertile (T1-T3) of quercetin-rich fooda intake in EAGLE, separately for histologic subtypes

ADSQ
Subject characteristicsT1 (n = 57)T2 (n = 47)T3 (n = 40)PT1 (n = 48)T2 (n = 42)T3 (n = 30)P
Quercetin-rich food intakeb, median (IQR)0.79 (0.42)1.56 (0.46)2.45 (0.53)0.71 (0.37)1.47 (0.44)2.53 (0.67)
Age, mean (SD)62.58 + 9.0364.58 + 8.2165.57 + 8.550.22c68.48 + 7.0969.02 + 6.3066.37+ 8.620.29c
Male, n, %38 (66.67)25 (53.19)20 (50.0)0.20d46 (95.83)42 (100)30 (100)0.22d
BMI, mean (SD)24.42 + 3.7625.59 + 3.9824.42 + 3.170.21c25.42 + 3.1026.73 + 3.7127.74 + 3.920.02c
Smoking status, %0.01d0.08d
 Never4 (7.02)16 (34.04)7 (17.50)01 (2.38)0
 Former22 (38.60)12 (25.53)22 (55.0)18 (37.50)20 (47.62)20 (66.67)
 Current31 (54.39)19 (40.43)11 (27.50)30 (62.50)21 (50.0)10 (33.33)
Pack years, median (IQR) intake40.0 (24.0)34.5 (32.0)33.0 (28.0)0.63e54.0 (28.25)46.25 (21.70)42.50 (33.0)0.22e
 Vegetablesb,fmedian (IQR)1.01 (0.43)2.03 (0.79)2.46 (1.93)<0.01e0.95 (0.51)1.68 (0.94)2.61 (1.83)<0.01e
 Fruitsb,g, median (IQR)0.96 (0.82)1.78 (1.28)2.80 (1.40)<0.01e1.03 (0.89)1.55 (0.69)3.00 (1.37)<0.01e
 Meatsb,h, median (IQR)0.70 (0.68)1.07 (0.79)0.94 (0.98)0.01e1.07 (0.94)1.23 (1.27)1.33 (0.62)0.06e
 Lifetime alcoholb, median (IQR)23.13 (25.17)14.79 (34.01)7.41 (19.58)0.01e30.69 (24.69)36.23 (20.30)31.18 (31.97)0.66e

NOTE: Column percent totals may not sum to 100% because of rounding; bolded P values indicated statistical significance.

Abbreviations: T1–T3 = first tertile through third tertile; IQR, interquartile range; SD, standard deviation.

  • aQuercetin-rich foods: summary measure of apples, grapes, onions, artichoke/fennel/celery, beans, apricots, plums, turnips, peppers, strawberries, tomatoes, and broccoli.

  • bFrequency (food groups, servingsper day; alcohol, grams per day).

  • cANOVA test.

  • dχ2 test.

  • eNonparametric Kruskal–Wallis test.

  • fTotal vegetables intake: summary measure of tomatoes, peppers, carrots, salad, peas, beans/chickpeas, mushrooms, broccoli, turnips, savoy, black cabbage, onions, cooked spinach/Swiss.

  • gTotal fruits intake: summary measure of apples, pears, bananas, kiwis, oranges/grapefruits, mandarins/clementines, grapes, peaches/clingstones, apricots, plums, strawberries, melons, and fruit cocktails.

  • hTotal meat intake: summary measure of cooked ham (prosciutto cotto), smoked ham (prosciutto crudo), cured ham (speck), salami, baloney (mortadella), wurstel, salted sliced beef, coppa, pancetta, and other types of processed meats.