Trend in age at menarche and its association with body weight, body mass index and non-communicable disease prevalence in Indonesia: evidence from the Indonesian Family Life Survey (IFLS)

Table 1 Characteristics of the selected female respondents according to IFLS wave (N = 15,744)

	IFLS 1 (n = 33)		IFLS 2 (n = 100)		IFLS 3(n = 1396)		IFLS 4(n = 2168)		IFLS 5(n = 12,047)
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	P-value
Age, years	36.5	9.4	41.8	10.7	36.9	12.9	40.1	13.4	36.1	10.0	< 0.001
Age at Menarche, years	14.9	2.7	14.0	2.4	14.1	1.9	14.0	1.8	13.7	1.8	< 0.001
Nutritional status
BMI, kg/m²	21.64	4.23	21.59	4.03	22.35	3.96	24.40	14.22	24.88	4.70	< 0.001
Weight, kg	49.7	9.9	47.4	9.5	50.5	9.8	53.4	11.4	57.0	11.52	< 0.001
Height, cm	151.5	6.1	148.0	6.1	150.2	5.3	149.9	8.9	151.4	5.5	< 0.001
	%		%		%		%		%
Wealth Index, %
Poor	39.4		26.0		33.4		35.2		42.1		< 0.001
Average	36.4		39.0		38.4		42.5		40.4
Rich	24.2		35.0		28.2		22.3		17.5
Living area, %
Urban	36.4		29.0		45.9		51.8		57.3		< 0.001
Rural	63.6		71.0		54.1		48.2		42.7
Region, %
Java and Bali	60.6		64.0		62.7		61.2		55.1		< 0.001
Outside Java and Bali	39.4		36.0		37.3		38.8		44.9

Note: ANOVA was used to analyse the age, Age at Menarche and nutritional status in each wave; Chi-square was applied for wealth index, living area, and region

ISSN: 1471-2458