Table 1.

Descriptive proportion of respondents by characteristics from 5 waves of IFLS in 1993–2014 (N = 14,810)

Characteristics	Waves (N = 14,810)
	I—1993	II—1997	III—2000	IV—2007	V—2014
Sex
Female	56.27	56.26	53.75	54.5	54.92
Male	43.73	43.74	46.25	45.5	45.08
Age group
20–29	18.52	16.2	9.04	0.05	0
30–39	30.28	30.64	30.64	21.28	1.04
40–49	20.89	22.31	25.48	32.31	36.40
50–59	17.61	16.41	16.41	22.33	31.86
≥ 60	12.7	14.44	18.43	24.02	30.71
Cohort
1964 -1973	18.52	27.71	30.77	34.43	39.16
1954 -1963	30.28	28.43	27.77	29.42	31.52
1944–1953	20.89	18.21	17.45	17.36	17.17
1934–1943	17.61	14.93	14.02	12.36	9.22
≤ 1933	12.7	10.73	9.98	6.43	2.91
Highest education attainment
Never/Not completed primary education	21.95	19.83	18.64	16.97	14.03
Primary	51.25	49.07	48.09	48.32	49.71
Secondary	23.29	26.70	28.46	29.84	31.12
Tertiary	3.51	4.40	4.81	4.88	5.14
Asian BMI classification
Underweight	17.16	15.90	16.40	13.27	11.18
Normal	55.96	52.65	49.03	42.13	36.08
Overweight	20.96	23.57	25.40	29.74	33.45
Obese	5.91	7.88	9.17	14.86	19.29