Prevalence of Normal-Weight Obesity in Community-Dwelling Chinese Older Adults: Results from the Beijing Longitudinal Study of Aging

Figures & data

Table 1 The Characteristics of Obesity Based on Body Mass Index

Item		n	Underweight, n (%)	Normal, n (%)	Overweight, n (%)	Obesity, n (%)	x^2	P
Sample		2393	153(6.4)	1057(44.2)	811(33.9)	372(15.5)
Sex	Male	1051	74(7.0)	511(48.6)	356(33.9)	110(10.5)	40.73	<0.001
	Female	1342	79(5.9)	546(40.7)	455(33.9)	262(19.5)
Area	Rural	1245	104(8.4)	593(47.6)	369(29.6)	179(14.4)	38.74	<0.001
	Urban	1148	49(4.3)	464(40.4)	442(38.5)	193(16.8)
Age	60~	467	16(3.4)	194(41.5)	174(37.3)	83(17.8)	88.45	<0.001
	65~	408	21(5.1)	154(37.7)	149(36.5)	84(20.6)
	70~	444	22(5.0)	182(41.0)	172(38.7)	68(15.3)
	75~	529	26(4.9)	247(46.7)	178(33.6)	78(14.7)
	80~	545	68(12.5)	280(51.4)	138(25.3)	59(10.8)

Table 2 The Assessment Standardized Rate of Beijing Elderly Based on Body Mass Index

Item		Underweight (%)	Normal (%)	Overweight (%)	Obesity (%)	x^2	P
Sample		5.5	43.0	35.5	16.1
Sex	Male	6.0	47.0	36.2	10.8	48.24	<0.001
	Female	5.0	39.3	34.8	20.9
Area	Rural	7.1	45.7	32.3	14.9	29.76	<0.001
	Urban	3.5	39.7	39.2	17.5
Age	60~	3.4	42.0	37.8	16.8	65.28	<0.001
	65~	5.2	37.8	36.5	20.5
	70~	5.1	41.1	38.7	15.2
	75~	5.0	47.5	33.4	14.1
	80~	12.3	51.4	25.3	11.0

Table 3 The Characteristics of Obesity Based on Waist Circumference

Item		n	Normal, n (%)	Abdominal Obesity, n (%)	Standardized Rate (%)	x^2	P
Sample		2382	886(37.2)	1496(62.8)	62.3
Sex	Male	1049	525(50.0)	524(50.0)	50.5	128.81	<0.001
	Female	1333	361(27.1)	972(72.9)	73.0
Area	Rural	1238	512(41.4)	726(58.6)	58.2	19.23	<0.001
	Urban	1144	374(32.7)	770(67.3)	67.0
Age	60~	462	176(38.1)	286(61.9)	60.1	7.01	0.135
	65~	408	146(35.8)	262(64.2)	63.9
	70~	440	150(34.1)	290(65.9)	65.6
	75~	528	184(34.8)	344(65.2)	63.0
	80~	544	230(42.3)	314(57.7)	57.7

Table 4 The Characteristics of Obesity Based on Body Fat Percentage

Item		n	Normal, n (%)	Overfat, n (%)	Standardized Rate (%)	x^2	P
Sample		1223	560(45.8)	663(54.2)	52.4
Sex	Male	525	190(36.2)	335(63.8)	60.4	28.16	<0.001
	Female	698	370(53.0)	328(47.0)	45.6
Area	Rural	636	319(50.2)	317(49.8)	47.9	12.33	<0.001
	Urban	587	241(41.1)	346(58.9)	57.7
Age (ys)	60~	269	158(58.7)	111(41.3)	42.1	34.64	<0.001
	65~	260	127(48.8)	133(51.2)	51.3
	70~	247	102(41.3)	145(58.7)	58.8
	75~	271	105(38.7)	166(61.3)	63.2
	80~	176	68(38.6)	108(61.4)	61.7

Table 5 The Characteristics of Obesity Based on Different Obesity Types

Item		n	Normal, n (%)	Muscle Type, n (%)	NWO, n (%)	Fatty Obesity, n (%)	x^2	P
Sample		1223	393(32.1)	167(13.7)	152(12.4)	511(41.8)
Sex	Male	525	148(28.2)	42(8.0)	120(22.9)	215(41.0)	106.64	<0.001
	Female	698	245(35.1)	125(17.9)	32(4.6)	296(42.4)
Area	Rural	636	234(36.8)	85(13.4)	77(12.1)	240(37.7)	14.33	0.002
	Urban	587	159(27.1)	82(14.0)	75(12.8)	271(46.2)
Age	60~	269	104(38.7)	54(20.1)	11(4.1)	100(37.2)	73.72	<0.001
	65~	260	86(33.1)	41(15.8)	18(6.9)	115(44.2)
	70~	247	72(29.1)	30(12.1)	30(12.1)	115(46.6)
	75~	271	76(28.0)	29(10.7)	52(19.2)	114(42.1)
	80~	176	55(31.3)	13(7.4)	41(23.3)	67(38.1)

Abbreviation: NWO, normal-weight obesity.

Table 6 The Assessment Standardized Rate of Beijing Elderly Based on Different Obesity Types

Item		Normal (%)	Muscle Type (%)	NWO (%)	Fatty Obesity (%)	x^2	P
Sample		32.9	14.7	10.7	41.8
Sex	Male	30.2	9.5	18.7	41.6	91.73	<0.001
	Female	35.2	19.2	3.7	41.9
Area	Rural	37.1	14.9	10.1	37.8	14.44	0.002
	Urban	27.9	14.4	11.4	46.3
Age	60~	38.4	19.4	4.5	37.7	81.94	<0.001
	65~	33.2	15.7	6.9	44.2
	70~	29.2	12.0	12.4	46.4
	75~	26.8	9.8	21.6	41.8
	80~	30.9	7.4	23.4	38.3

Abbreviation: NWO, normal-weight obesity.