Table 1.

Characteristics of the study population by presence of metabolic syndrome stratified by menopausal status and state (ESMaestras, 2006)

PremenopausalPostmenopausal
JaliscoVeracruzJaliscoVeracruz
No metabolic syndrome (n = 300)Metabolic syndrome (n = 196)No metabolic syndrome (n = 232)Metabolic syndrome (n = 61)No metabolic syndrome (n = 69)Metabolic syndrome (n = 73)No metabolic syndrome (n = 110)Metabolic syndrome (n = 70)
Mean (IQR)
Age at mammogram42.9 (39.9–45.4)44.9 (41.2–47.8)42.8 (40.4–45.6)42.8 (40.5–44.5)53.1 (50.1–55.2)54.2 (50.0–57.4)52.6 (48.9–56.0)54.4 (51.6–57.1)
BMI at mammogram26.3 (23.0–28.7)30.5 (27.4–33.2)27.5 (24.3–30.4)32.1 (29.3–35.4)26.7 (23.7–29.3)31.1(27.7–35.1)28.6 (25.6–31.3)31.8 (28.1–34.5)
Percent density39.2 (29.9–49.3)40.2 (29.0–50.4)34.2 (24.0–44.5)29.0 (18.6–37.2)33.1 (24.6–41.3)29.9 (20.9–41.4)27.2 (16.7–35.4)23.2 (14.5–29.7)
n (%)
Age at menarche, y
 <1270 (23.7)43 (22.1)56 (24.1)14 (23.3)12 (17.7)23 (31.9)28 (26.2)30 (29.0)
 1281 (27.5)49 (25.3)65 (28.0)13 (21.7)16 (23.5)15 (20.8)26 (24.3)21 (30.4)
 1365 (22.0)52 (26.8)51 (22.0)19 (31.7)13 (19.1)12 (16.7)23 (21.5)9 (13.0)
 14+79 (26.8)50 (25.8)60 (25.9)14 (23.3)27 (39.7)22 (30.6)30 (28.0)19 (27.6)
Parity
 Nulliparous50 (17.4)22 (11.8)18 (8.2)4 (6.8)9 (13.4)10 (14.5)16 (14.8)6 (8.6)
 135 (12.2)13 (7.0)42 (19.2)17 (28.8)8 (12.0)9 (13.0)14 (13.0)11 (15.7)
 283 (28.8)54 (29.0)105 (48.0)24 (40.7)12 (17.9)14 (20.3)47 (43.5)23 (32.9)
 387 (30.2)64 (34.4)47 (21.4)11 (18.6)24 (35.8)16 (23.2)25 (23.2)22 (31.4)
 4+33 (11.5)33 (17.7)7 (3.2)3 (5.1)14 (20.9)20 (29.0)6 (5.5)8 (11.4)
Age at first birth (parous)
 <2021 (9.0)16 (10.0)21 (10.5)4 (7.6)7 (12.1)5 (8.8)10 (11.1)6 (9.4)
 20–2498 (42.2)63 (39.4)81 (40.7)18 (34.0)16 (27.6)22 (38.6)37 (41.1)25 (39.0)
 25–2979 (34.1)68 (42.5)68 (34.2)19 (35.8)26 (44.8)18 (31.6)29 (32.2)22 (34.4)
 30+34 (14.7)13 (8.1)29 (14.6)12 (22.6)9 (15.5)12 (21.0)14 (15.6)11 (17.2)
Family history of breast cancer18 (6.0)9 (4.6)8 (3.5)3 (4.9)8 (11.6)2 (2.7)12 (10.9)3 (4.3)
History of BBD40 (13.3)31 (15.8)36 (15.5)5 (8.2)5 (7.3)6 (8.2)20 (18.2)5 (7.1)
Hormonal contraceptives
 Never145 (50.5)93 (48.4)104 (46.6)32 (54.3)38 (56.7)38 (52.8)50 (48.1)26 (38.2)
 Ever, <5 y62 (21.6)56 (29.2)63 (28.3)14 (23.7)16 (23.9)16 (22.2)20 (19.2)21 (30.9)
 Ever, 5+ y68 (23.7)36 (18.8)48 (21.5)11 (18.6)13 (19.4)16 (22.2)28 (26.9)18 (26.5)
 Ever, unknown duration12 (4.2)7 (3.6)8 (3.6)2 (3.4)0 (0.0)2 (2.8)6 (5.8)3 (4.4)
Smoking status
 Never204 (75.3)117 (67.6)138 (65.7)35 (66.0)47 (74.6)49 (75.4)62 (72.1)40 (69.0)
 Past35 (12.9)39 (22.6)41 (19.5)10 (18.9)3 (4.8)4 (6.2)9 (10.5)11 (19.0)
 Current32 (11.8)17 (9.8)31 (14.8)8 (15.1)13 (20.6)12 (18.4)15 (17.4)7 (12.0)
Alcohol, drinks/d
 None83 (30.1)46 (25.7)59 (28.1)13 (23.2)21 (32.3)17 (25.0)24 (24.2)16 (25.4)
 <0.1137 (49.6)94 (52.5)107 (51.0)30 (53.6)29 (44.6)36 (52.9)45 (45.5)35 (55.6)
 0.1–0.240 (14.5)29 (16.2)24 (11.4)12 (21.4)9 (13.9)11 (16.2)19 (19.2)8 (12.7)
 >0.216 (5.8)10 (5.6)20 (9.5)1 (1.8)6 (9.2)4 (5.9)11 (11.1)4 (6.3)
SES
 Low34 (12.4)27 (15.6)30 (14.9)12 (23.5)13 (20.0)12 (19.7)19 (19.6)12 (19.0)
 Medium123 (44.7)76 (43.9)90 (44.5)25 (49.0)23 (35.4)22 (36.1)45 (46.4)31 (49.2)
 High118 (42.9)70 (40.5)82 (40.6)14 (27.5)29 (44.6)27 (44.2)33 (34.0)20 (31.8)
Age at menopause, y
 <405 (8.0)0 (0.0)6 (5.7)4 (5.8)
 40–4412 (19.4)15 (23.4)22 (20.7)14 (20.6)
 45–4928 (45.2)27 (42.2)49 (46.2)25 (36.8)
 50+17 (27.4)22 (34.4)29 (27.4)25 (26.8)

Abbreviation: IQR, interquartile range.