Relationship between Body Mass Index Reference and All-Cause Mortality: Evidence from a Large Cohort of Thai Adults
Table 3
Association between body mass index categories and all-cause mortality, Thai Cohort Study (2005–2010).
Body mass index categories
Adjusted hazard ratio 95% Confidence Intervals for all-cause mortality by BMI reference bands for two age groups
Reference (18.5 to <23)
Reference (18.5 to <20.75)
Reference (20.75 to <23)
Reference (23 to <25)
<35 years
35–65 years
<35 years
35–65 years
<35 years
35–65 years
<35 years
35–65 years
Underweight (<18.5)
1.16 0.82–1.65
1.35 0.66–2.74
1.15 0.79–1.68
1.82 0.81–4.08
1.18 0.79–1.76
1.13 0.54–2.35
1.06 0.67–1.70
2.32 0.99–5.22
Lower normal (≥18.5 to <20.75)
Reference
Reference
1.02 0.73–1.43
0.62 0.36–1.08
0.93 0.62–1.39
1.27 0.66–2.45
Upper normal (≥20.75 to <23)
0.98 0.70–1.36
1.61 0.93–2.81
Reference
0.90 0.60–1.36]
2.05 1.19–3.53
Overweight (≥23 to <25)
1.09 0.75–1.58
0.57 0.34–0.96
1.08 0.72–1.62
0.79 0.41–1.51
1.11 0.73–1.67
0.49 0.28–0.84
Reference
Obese I (≥25 to <30.0)
1.12 0.74–1.69
0.93 0.59–1.47
1.11 0.71–1.73
1.28 0.69–2.35
1.13 0.73–1.77
0.79 0.49–1.29
1.02 0.62–1.68
1.63 0.90–2.93
Obese II (≥30)
0.63 0.20–1.99
1.74 0.79–3.81
0.63 0.20–1.20
2.37 1.01–5.70
0.64 0.20–2.05
1.47 0.66–3.28
0.58 0.18–1.89
3.02 1.26–7.22
Hazard ratios were adjusted for baseline covariates including sex, age in years, personal monthly income, paid work hours, rural-urban residence, self-assessed health at baseline, smoking status, alcohol drinking status, and physical activity. Bold results were statistically significant at .
