Table 1

Contributions of population age structure and age-specific suicide rates to the changes in suicide rates across the four income level regions, 1990–2019

Income level regions	Age groups	Men			Women			Overall
Income level regions	Age groups	Age-specific suicide rate (I)	Population age structure (II)	Total (I+II)	Age-specific suicide rate (III)	Population age structure (IV)	Total (III+IV)	Age-specific suicide rate (V)	Population age structure (VI)	Total (V+VI)
Overall	Under 25	−0.73	−0.65	−1.38	−1.15	−0.65	−1.80	−0.94	−0.65	−1.59
	(% of the contribution)	23.7%	20.9%	44.6%	23.5%	13.3%	36.8%	23.5%	16.2%	39.7%
	25–44	−1.84	0.36	−1.49	−2.19	0.22	−1.96	−2.02	0.29	−1.73
	(% of the contribution)	59.6%	−11.5%	48.1%	44.6%	−4.6%	40.0%	50.5%	−7.3%	43.2%
	45–64	−2.16	1.68	−0.48	−1.64	0.93	−0.71	−1.92	1.32	−0.60
	(% of the contribution)	69.7%	−54.2%	15.5%	33.4%	−18.9%	14.5%	47.9%	−32.9%	14.9%
	65+	−1.23	1.49	0.25	−1.27	0.85	−0.43	−1.21	1.12	−0.09
	(% of the contribution)	39.9%	−48.1%	−8.2%	25.9%	−17.3%	8.7%	30.2%	−28.0%	2.1%
	Total	−5.96	2.87	−3.09	−6.25	1.35	−4.91	−6.09	2.08	−4.01
	(% of the contribution)	192.9%	−92.9%	100.0%	127.5%	−27.5%	100.0%	152.0%	−52.0%	100.0%
Low income	Under 25	−0.42	−0.08	−0.51	−0.37	−0.04	−0.40	−0.39	−0.06	−0.45
	(% of the contribution)	18.0%	3.5%	21.5%	22.5%	2.2%	24.7%	19.9%	3.0%	22.9%
	25–44	−0.70	0.39	−0.32	−0.75	0.14	−0.61	−0.70	0.24	−0.46
	(% of the contribution)	29.9%	−16.5%	13.5%	46.1%	−8.3%	37.8%	35.9%	−12.5%	23.5%
	45–64	−1.07	0.07	−1.00	−0.50	0.03	−0.48	−0.77	0.05	−0.73
	(% of the contribution)	45.4%	−3.0%	42.4%	31.1%	−1.6%	29.5%	39.5%	−2.4%	37.1%
	65+	−0.30	−0.23	−0.53	−0.16	0.03	−0.13	−0.28	−0.05	−0.32
	(% of the contribution)	12.9%	9.8%	22.6%	9.8%	−1.8%	8.0%	14.1%	2.5%	16.6%
	Total	−2.50	0.15	−2.35	−1.78	0.15	−1.62	−2.15	0.18	−1.96
	(% of the contribution)	106.2%	−6.2%	100.0%	109.5%	−9.5%	100.0%	109.4%	−9.4%	100.0%
Lower middle income	Under 25	−0.66	−0.57	−1.23	−1.73	−0.87	−2.60	−1.19	−0.71	−1.90
	(% of the contribution)	51.4%	44.4%	95.9%	46.1%	23.2%	69.3%	47.3%	28.2%	75.5%
	25–44	−1.09	0.86	−0.23	−1.84	0.62	−1.22	−1.48	0.75	−0.73
	(% of the contribution)	85.5%	−67.5%	18.0%	49.1%	−16.5%	32.6%	58.7%	−29.7%	29.1%
	45–64	−0.98	0.88	−0.10	−0.52	0.48	−0.05	−0.79	0.71	−0.08
	(% of the contribution)	76.6%	−68.6%	8.0%	14.0%	−12.7%	1.3%	31.5%	−28.2%	3.3%
	65+	−0.26	0.54	0.28	−0.20	0.32	0.12	−0.23	0.43	0.20
	(% of the contribution)	20.4%	−42.2%	−21.8%	5.2%	−8.5%	−3.3%	9.3%	−17.2%	−7.9%
	Total	−2.99	1.71	−1.28	−4.29	0.54	−3.75	−3.69	1.18	−2.51
	(% of the contribution)	233.9%	−133.9%	100.0%	114.5%	−14.5%	100.0%	146.8%	−46.8%	100.0%
Upper middle income	Under 25	−0.75	−1.13	−1.88	−1.25	−1.08	−2.33	−1.00	−1.11	−2.11
	(% of the contribution)	17.2%	25.9%	43.1%	15.3%	13.3%	28.7%	15.9%	17.7%	33.7%
	25–44	−2.63	0.47	−2.16	−3.97	0.36	−3.61	−3.31	0.42	−2.89
	(% of the contribution)	60.2%	−10.8%	49.4%	48.9%	−4.5%	44.4%	52.9%	−6.7%	46.2%
	45–64	−4.22	3.32	−0.90	−3.82	2.33	−1.50	−4.05	2.84	−1.21
	(% of the contribution)	96.5%	−75.9%	20.7%	47.1%	−28.7%	18.4%	64.8%	−45.5%	19.3%
	65+	−2.19	2.76	0.57	−3.06	2.37	−0.69	−2.60	2.54	−0.05
	(% of the contribution)	50.1%	−63.2%	−13.1%	37.7%	−29.3%	8.5%	41.5%	−40.6%	0.9%
	Total	−9.80	5.42	−4.37	−12.10	3.99	−8.12	−10.95	4.70	−6.25
	(% of the contribution)	224.0%	−124.0%	100.0%	149.1%	−49.1%	100.0%	175.1%	−75.1%	100.0%
High income	Under 25	−0.49	−0.72	−1.21	−0.09	−0.18	−0.27	−0.29	−0.44	−0.72
	(% of the contribution)	22.0%	31.9%	53.9%	5.8%	12.1%	17.9%	16.1%	24.7%	40.8%
	25–44	−1.86	−0.85	−2.71	−0.42	−0.29	−0.71	−1.08	−0.59	−1.66
	(% of the contribution)	82.8%	37.7%	120.5%	28.4%	19.5%	47.9%	60.7%	33.2%	94.0%
	45–64	−1.10	1.94	0.84	−0.76	0.70	−0.06	−0.88	1.29	0.41
	(% of the contribution)	49.2%	−86.5%	−37.3%	50.9%	−46.9%	4.0%	49.6%	−72.9%	−23.3%
	65+	−2.17	3.01	0.83	−1.49	1.04	−0.45	−1.59	1.79	0.20
	(% of the contribution)	96.9%	−134.1%	−37.2%	100.2%	−70.0%	30.2%	89.8%	−101.3%	−11.5%
	Total	−5.63	3.39	−2.24	−2.75	1.27	−1.48	−3.83	2.06	−1.77
	(% of the contribution)	251.0%	−151.0%	100.0%	185.3%	−85.3%	100.0%	216.3%	−116.3%	100.0%