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Table 1 Characteristics of study participants according to tertiles of DASH and MED dietary patterns1

From: The Mediterranean diet and dietary approach to stop hypertension (DASH)-style diet are differently associated with lipid profile in a large sample of Iranian adults: a cross-sectional study of Shahedieh cohort

  MED DASH
T1 (n = 1771) T2 (n = 1181) T3 (n = 1788) P-value2 T1 (n = 1475) T2 (n = 1840) T3 (n = 1425) P-value2
Sex     0.01*     0.01*
 Male 62.3 (1104) 61.1 (722) 57.6 (1030)   62.6 (923) 57 (1049) 62 (884)  
 Female 37.7 (667) 38.9 (459) 42.4 (758)   37.4 (552) 43 (791) 38 (541)  
Age (year)     0.10     0.01*
 30-39 7.1 (126) 6.8 (80) 6.5 (116)   7.4 (109) 7.5 (138) 5.3 (75)  
 40-49 48.2 (854) 48.6 (574) 45.6 (815)   54.8 (809) 46.4 (853) 40.8 (581)  
 50-59 29.5 (522) 29.2 (345) 31 (555)   26 (384) 30.5 (561) 33.5 (477)  
 ≥ 60 15.2 (269) 15.4 (182) 16.9 (302)   11.7 (173) 15.7 (288) 20.5 (292)  
BMI     0.36     0.42
Normal 28.2 (501) 33.0 (390) 27.9 (500)   30.5 (450) 31.0 (590) 28.0 (500)  
Overweight 33.5 (594) 25.4 (301) 32.2 (630)   33.4 (494) 31.5 (600) 35.7 (510)  
Obese 31.1 (552) 41.0 (485) 29.6 (531)   27.1 (401) 26.6 (506) 39.2 (559)  
Married status     0.03*     0.80
 Single 25.9 (458) 25.1 (297) 25.2 (450)   24.4 (360) 26.1 (480) 25.6 (365)  
 Married 62.1 (1099) 59.4 (702) 60.9 (1089)   62.4 (921) 59.8 (1100) 61 (869)  
 Divorced 11.3 (208) 14.8 (175) 13.3 (237)   12.8 (185) 13.7 (253) 12.8 (183)  
Education     0.08     0.26
 Illiterate 29.4 (521) 29 (343) 28.7 (513)   27.1 (399) 29.9 (550) 30 (428)  
 Primary school 19.7 (349) 19.9 (235) 19.1 (342)   20.7 (306) 19.2 (354) 18.7 (266)  
 Diploma3 23 (408) 24.8 (293) 22.6 (404)   25 (369) 22.8 (419) 22.2 (317)  
 University 26.9 (393) 26.2 (310) 29.7 (527)   19.9 (280) 18.3 (316) 29.1 (414)  
Smoking     0.33     0.01*
 No 73 (1292) 72.1 (852) 73.9 (1321)   75 (1028) 74.4 (1368) 69.7 (1069)  
 Yes 25.3 (448) 26.3 (311) 23.8 (425)   28.9 (427) 23.6 (435) 22.6 (322)  
Physical activity     0.69     0.40
 Sedentary 39.2 (502) 29.8 (564) 31.8 (446)   27.3 (380) 36.3 (663) 35.5 (507)  
 Moderate 33.5 (494) 34.3 (613) 32.9 (472)   33.5 (494) 33.3 (613) 33.1 (446)  
 Active 27.3 (380) 36.3 (663) 35.5 (507)   39.2 (502) 29.8 (564) 31.8 (446)  
Social-economic status     0.28     0.36
 Poor 25.8 (381) 26.9 (494) 33.5 (478)   33.5 (478) 28.8 (381) 26.9 (494)  
 Moderate 33.4 (492) 37 (683) 32.3 (460)   32.3 (460) 33.4 (492) 37 (683)  
 Good 37.4 (552) 36.3 (663) 34.2 (487)   34.2 (487) 37.4 (552) 36.3 (663)  
Total energy intake     0.16     0.27
 800-2225 28.2 (500) 28.9 (342) 22.5 (403)   24.3 (359) 24.6 (453) 30.1 (430)  
 2225-3650 18.2 (324) 19 (225) 22.7 (406)   23.7 (350) 19.9 (367) 25.2 (360)  
 3650-5075 22.7 (403) 26.2 (310) 22.2 (398)   30.7 (453) 25.4 (468) 22.4 (320)  
 5075-6500 18.2 (490) 21.6 (256) 23.8 (427)   21 (310) 22.9 (423) 21.5 (307)  
  1. 1Data are reported as a percent (number). T1: first tertile; T2: second tertile; T3: third tertile
  2. 2Chi-squared test
  3. 3Diploma: middle school diploma, and high school diploma
  4. *Values with distinct superscripts are significantly different at P < 0.05