Table 2: Relative risk ratios of the impact of body mass index categories on disability transitions and mortality among those who were free of disability in the baseline, São Paulo, Brazil—2000–2006.

VariablesADL IADL NAGI
RRRa95% CIRRR95% CIRRR95% CI

Incidence of disability
Age1.10 * * *1.11 * * *1.05 * *
Female1.70 *1.48 2.37 * *
Smoking status
 Former smoker0.94 1.15 1.36
 Current smoker1.58 1.52 0.93
Number of chronic conditions1.56 * * *1.33 * *1.23
Schooling0.95 0.91 0.88 *
Live alone0.81 0.61 0.93
BMI categories
 Underweight1.16 1.92 * *1.03
 Overweight0.93 1.57 1.86
 Obese2.07 * *2.42 * * *1.19
Mortality
Age1.11 * * *1.13 * * *1.11 * * *
Female0.60 *0.41 * * *0.68
Smoking status
 Former smoker1.25 1.17 0.90
 Current smoker2.89 * * *2.69 * *2.68 *
Number of chronic conditions1.40 * * *1.41 * * *1.82 * *
Schooling0.95 0.94 0.93
Live alone1.01 1.16 1.36
BMI categories
 Underweight1.21 1.22 1.87
 Overweight1.30 1.41 2.50 *
 Obese1.07 1.29 0.68
Lost to followup or missing disability status in 2006
Age1.03 *1.05 * * *1.03
Female1.38 1.24 2.19 **
Smoking status
 Former smoker1.36 1.54 2.01 *
 Current smoker1.05 1.02 1.32
Number of chronic conditions1.12 1.12 1.22
Schooling1.02 1.01 0.99
Live alone1.37 1.42 0.93
BMI categories
 Underweight1.58 2.07 * *1.44
 Overweight1.25 1.33 1.41
 Obese1.36 1.55 *1.32
1,4201,207654
BIC′−104.55−82.45147.73

ADL: activities of daily living; IADL: instrumental activities of daily living; RRR: relative risk ratio; CI: confidence interval; BMI: body mass index.
aRemaining free of disability is the reference category. Normal weight is the reference category for BMI, living accompanied is the baseline category for household arrangement, and never smoked is the reference category for smoking status.
*** ; ** ; * .