Relationship between Body Mass Index Reference and All-Cause Mortality: Evidence from a Large Cohort of Thai Adults

Table 1

Body mass index and all-cause mortality, Thai Cohort Study (2005–2010).

Body mass index categories	Proportion %			5-year crude death rate per 100,000 ()^*
	Overall	Age groups		Overall	Age groups
		<35 years	35–65 years		<35 years	35–65 years
Underweight (<18.5)	14.7	18.7	4.5	570.0 (72)	511.2 (59)	104.0 (12)
Lower normal (≥ 18.5 to <20.75)	29.1	33.6	17.7	488.0 (122)	424.3 (88)	154.3 (32)
Upper normal (≥20.75 to <23)	25.3	24.7	26.9	714.1 (155)	505.4 (77)	485.8 (74)
Overweight (≥23 to <25)	15.1	11.7	23.7	725.9 (94)	634.7 (46)	662.3 (48)
Obese I (≥25 to <30)	13.2	9.2	23.4	850.8 (96)	653.8 (37)	653.8 (59)
Obese II (≥30)	2.6	2.1	3.9	1075.3 (24)	463.7 (6)	1919.0 (18)

: actual number of deaths; total deaths = 563 for the period 2005–2010.