TABLE 3.
Relative risk of all-cause mortality by body mass index* (BMI) category at age 21 years, Leisure World Cohort Study, 1981–2004
| BMI category | Median BMI | BMI range | No. of participants | No. of deaths | Model 1† |
Model 2‡ |
Model 3§ |
|||
|---|---|---|---|---|---|---|---|---|---|---|
| RR¶ | 95% CI¶ | RR | 95% CI | RR | 95% CI | |||||
| All participants | ||||||||||
| Underweight (BMI <18.5) | 17.8 | 14.1–18.5 | 1,408 | 1,154 | 1.05 | 0.99, 1.12 | 1.04 | 0.97, 1.10 | 1.02 | 0.96, 1.09 |
| Normal weight (BMI 18.5–24.9) | 21.1 | 18.5–25.0 | 11,014 | 9,138 | 1.00 | Reference | 1.00 | Reference | 1.00 | Reference |
| Overweight/obese (BMI ≥25) | 26.4 | 25.0–44.0 | 1,029 | 911 | 1.17 | 1.09, 1.25 | 1.16 | 1.08, 1.24 | 1.15 | 1.07, 1.23 |
| Excluding the first 5 years of follow-up | ||||||||||
| Underweight (BMI <18.5) | 17.8 | 14.1–18.5 | 1,223 | 969 | 1.06 | 0.99, 1.13 | 1.05 | 0.98, 1.12 | 1.04 | 0.97, 1.11 |
| Normal weight (BMI 18.5–24.9) | 21.1 | 18.5–25.0 | 9,356 | 7,479 | 1.00 | Reference | 1.00 | Reference | 1.00 | Reference |
| Overweight/obese (BMI ≥25) | 26.4 | 25.0–44.0 | 796 | 678 | 1.13 | 1.04, 1.22 | 1.13 | 1.04, 1.22 | 1.12 | 1.04, 1.21 |
*
Weight (kg)/height (m)2.
†
Results were adjusted for age at entry, gender, and smoking.
‡
Results were adjusted for age at entry, gender, smoking, and “active” activities (seven categories).
§
Results were adjusted for age at entry, gender, smoking, “active” activities (seven categories), and history of hypertension, angina, myocardial infarction, stroke, diabetes, arthritis, and cancer.
¶
RR, relative risk; CI, confidence interval.