Table 5.

Relative risks of obesity and abdominal obesity in different study subgroups in phases I to IV^* (women), Tehran Lipid and Glucose Study (TLGS), 1999 to 2011

		Phase II		Phase III		Phase IV
	Phase I	RR	95 % CI	RR	95 % CI	RR	95 % CI
Total
Obesity	1	1·15†	1·11, 1·19	1·14†	1·09, 1·18	1·24†	1·19, 1·29
Abdominal obesity	1	1·12†	1·09, 1·16	1·01	0·97, 1·04	1·22†	1·18, 1·27
Age
20–39 years
Obesity	1	1·35†	1·25, 1·46	1·35†	1·24, 1·46	1·53†	1·38, 1·68
Abdominal obesity	1	1·24†	1·13, 1·36	1·09	0·98, 1·22	1·79†	1·61, 2·00
40–59 years
Obesity	1	1·15†	1·10, 1·20	1·12†	1·07, 1·18	1·23†	1·16, 1·29
Abdominal obesity	1	1·17†	1·12, 1·22	1·01	0·96, 1·06	1·26†	1·20, 1·32
≥60 years
Obesity	1	1·15†	1·08, 1·23	1·20†	1·12, 1·29	1·32†	1·22, 1·42
Abdominal obesity	1	1·08†	1·03, 1·14	1·08†	1·02, 1·14	1·19†	1·13, 1·26
Married
Obesity	1	1·16†	1·12, 1·20	1·11†	1·07, 1·16	1·23†	1·17, 1·29
Abdominal obesity	1	1·12†	1·08, 1·17	0·99	0·95, 1·03	1·22†	1·17, 1·28
Non-married
Obesity	1	1·07	0·97, 1·17	1·13†	1·02, 1·24	1·14†	1·02, 1·27
Abdominal obesity	1	1·12†	1·03, 1·22	1·07	0·98, 1·18	1·21†	1·10, 1·33
Educational level
Primary and secondary
Obesity	1	1·15†	1·09, 1·21	1·20†	1·13, 1·27	1·29†	1·21, 1·38
Abdominal obesity	1	1·19†	1·13, 1·24	1·12†	1·06, 1·18	1·24†	1·18, 1·32
High school
Obesity	1	1·59†	1·38, 1·83	1·49†	1·29, 1·72	1·63†	1·40, 1·90
Abdominal obesity	1	1·69†	1·49, 1·93	1·49†	1·29, 1·70	1·87†	1·64, 2·13
University
Obesity	1	1·34†	1·26, 1·43	1·36†	1·27, 1·45	1·47†	1·36, 1·60
Abdominal obesity	1	0·92	0·83, 1·01	0·77	0·70, 0·85	1·14†	1·04, 1·25

RR, relative risk; WC, waist circumference.

^*Obesity, BMI≥30·0 kg/m²; abdominal obesity, WC≥89 cm in men and ≥91 cm in women; marital status, married and non-married (including widowed and divorced); Phase I was considered as the reference category.

^†All comparisons are adjusted for age and P<0·05 is considered statistically significant.