4.13 Summary Central and Southern Asia | New Adolescent Fertility Measures for the Long-term Perspective

4.13.1 Total adolescent births

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Total adolescent births per woman
	Region	5-year birth cohort	Unweighted average	Weighted average
		1940 1995	0.287138778927511 0.966417191181476	0.271856840488267 0.966797275546758
1	Central and Southern Asia	1940	0.97	0.97
2	Central and Southern Asia	1945	0.66	0.92
3	Central and Southern Asia	1950	0.62	0.91
4	Central and Southern Asia	1955	0.63	0.89
5	Central and Southern Asia	1960	0.59	0.86
6	Central and Southern Asia	1965	0.54	0.75
7	Central and Southern Asia	1970	0.52	0.72
8	Central and Southern Asia	1975	0.51	0.70
9	Central and Southern Asia	1980	0.48	0.63
10	Central and Southern Asia	1985	0.42	0.53

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4.13.2 Total adolescent births by age at first birth

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Total adolescent births per woman by age of first birth
	Region	5-year birth cohort	Age at first birth	Unweighted average	Weighted average
		1940 1995		1.051802228306940 2.966493919517320	1.053115002298420 2.848169061312260
1	Central and Southern Asia	1940	14 years and younger	2.97	2.76
2	Central and Southern Asia	1940	15-17 years	1.97	1.91
3	Central and Southern Asia	1940	18-19 years	1.10	1.08
4	Central and Southern Asia	1945	14 years and younger	2.83	2.85
5	Central and Southern Asia	1945	15-17 years	1.75	1.88
6	Central and Southern Asia	1945	18-19 years	1.11	1.09
7	Central and Southern Asia	1950	14 years and younger	2.90	2.82
8	Central and Southern Asia	1950	15-17 years	1.82	1.90
9	Central and Southern Asia	1950	18-19 years	1.09	1.09
10	Central and Southern Asia	1955	14 years and younger	2.92	2.84

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4.13.3 Contribution to total adolescent fertility by cohort and age at first birth

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Contribution to total adolescent fertility by age at first birth
	Region	5-year birth cohort	Age at first birth	Unweighted average	Weighted average
		1940 1995		0.063952137069082 0.666400166810985	0.046300587377114 0.585519235480765
1	Central and Southern Asia	1940	14 years and younger	0.28	0.23
2	Central and Southern Asia	1940	15-17 years	0.49	0.51
3	Central and Southern Asia	1940	18-19 years	0.23	0.26
4	Central and Southern Asia	1945	14 years and younger	0.21	0.21
5	Central and Southern Asia	1945	15-17 years	0.40	0.52
6	Central and Southern Asia	1945	18-19 years	0.39	0.27
7	Central and Southern Asia	1950	14 years and younger	0.18	0.20
8	Central and Southern Asia	1950	15-17 years	0.39	0.53
9	Central and Southern Asia	1950	18-19 years	0.43	0.27
10	Central and Southern Asia	1955	14 years and younger	0.13	0.18

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4.13.4 Contribution to total adolescent fertility by age at first birth (all cohorts)

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Contribution to total adolescent fertility by age at first birth (all cohorts)
	Region	Age at first birth	Unweighted average	Weighted average
			0.092487921007666 0.528450292615420	0.158660810778311 0.494642973513883
1	Central and Southern Asia	14 years and younger	0.09	0.16
2	Central and Southern Asia	15-17 years	0.38	0.49
3	Central and Southern Asia	18-19 years	0.53	0.35

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4.13.5 Completed fertility by motherhood entry age

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Completed fertility by motherhood entry age
	Region	5-year birth cohort	Age at first birth	Unweighted average	Weighted average
		1940 1975		3.239527802373390 7.073196251885030	3.164284681687540 6.249604686552740
1	Central and Southern Asia	1940	All mothers	6.58	5.73
2	Central and Southern Asia	1940	In adolescence	7.07	6.25
3	Central and Southern Asia	1940	After adolescence	5.70	4.91
4	Central and Southern Asia	1945	All mothers	5.49	5.38
5	Central and Southern Asia	1945	In adolescence	6.50	5.99
6	Central and Southern Asia	1945	After adolescence	4.75	4.52
7	Central and Southern Asia	1950	All mothers	5.13	5.01
8	Central and Southern Asia	1950	In adolescence	5.99	5.63
9	Central and Southern Asia	1950	After adolescence	4.39	4.15
10	Central and Southern Asia	1955	All mothers	4.81	4.66

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4.13.6 Difference in completed fertility between adolescent and non-adolescent mothers

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Difference in completed fertility between adolescent and non-adolescent mothers
	Region	5-year birth cohort	Unweighted average	Weighted average
		1940 1975	0.897802676168258 1.747712875094000	0.806422826509402 1.476950914174090
1	Central and Southern Asia	1940	1.38	1.34
2	Central and Southern Asia	1945	1.75	1.47
3	Central and Southern Asia	1950	1.60	1.48
4	Central and Southern Asia	1955	0.95	1.27
5	Central and Southern Asia	1960	1.28	1.28
6	Central and Southern Asia	1965	1.21	0.91
7	Central and Southern Asia	1970	0.99	0.81
8	Central and Southern Asia	1975	0.90	0.93

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4.13.7 Contribution of adolescent fertility to total fertility by cohort

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Contribution of adolescent fertility to total fertility by cohort
	Region	5-year birth cohort	Unweighted proportion	Weighted proportion
		1940 1975	0.124838380071988 0.162593718756641	0.175015760217019 0.203604578979194
1	Central and Southern Asia	1940	0.16	0.18
2	Central and Southern Asia	1945	0.12	0.18
3	Central and Southern Asia	1950	0.13	0.20
4	Central and Southern Asia	1955	0.13	0.20
5	Central and Southern Asia	1960	0.14	0.20
6	Central and Southern Asia	1965	0.13	0.18
7	Central and Southern Asia	1970	0.14	0.19
8	Central and Southern Asia	1975	0.15	0.18

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4.13.8 Mean age at first birth

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Mean age at first birth, women with first birth before age 30
	Region	5-year birth cohort	Unweighted average	Weighted average
		1940 1985	20.10218853133190 22.08062458681720	19.69676475636590 21.24503271428140
1	Central and Southern Asia	1940	20.1	19.7
2	Central and Southern Asia	1945	20.9	19.8
3	Central and Southern Asia	1950	20.9	19.8
4	Central and Southern Asia	1955	20.9	19.9
5	Central and Southern Asia	1960	21.1	20.0
6	Central and Southern Asia	1965	21.6	20.7
7	Central and Southern Asia	1970	21.4	20.8
8	Central and Southern Asia	1975	21.5	20.8
9	Central and Southern Asia	1980	21.9	21.0
10	Central and Southern Asia	1985	22.1	21.2

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4.13.9 Adolescent parity progression ratios

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Adolescent parity progression ratios
	Region	5-year birth cohort	Progression ratio from	Unweighted average	Weighted average
		1940 1995		0.041698280013524 0.522226415575658	0.043196618356910 0.564856396902353
1	Central and Southern Asia	1940	4th to 5th birth	0.29	0.25
2	Central and Southern Asia	1940	3rd to 4th birth	0.25	0.23
3	Central and Southern Asia	1940	2nd to 3rd birth	0.41	0.36
4	Central and Southern Asia	1940	1st to 2nd birth	0.52	0.47
5	Central and Southern Asia	1940	none to 1st birth	0.52	0.56
6	Central and Southern Asia	1945	4th to 5th birth	0.16	0.20
7	Central and Southern Asia	1945	3rd to 4th birth	0.15	0.23
8	Central and Southern Asia	1945	2nd to 3rd birth	0.25	0.32
9	Central and Southern Asia	1945	1st to 2nd birth	0.40	0.48
10	Central and Southern Asia	1945	none to 1st birth	0.41	0.54

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4.13.10 Adolescent parity progression ratios by age (all cohorts)

Do individual cohorts?

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Adolescent parity progression ratios by mother's age at first birth
	Region	Age at first birth	Progression ratio from	Unweighted average	Weighted average
				0.006293798984907 0.623501993693335	0.016173626169649 0.879090552592369
1	Central and Southern Asia	14 years and younger	none to 1st birth	0.03	0.05
2	Central and Southern Asia	15-17 years	none to 1st birth	0.14	0.20
3	Central and Southern Asia	18-19 years	none to 1st birth	0.18	0.20
4	Central and Southern Asia	14 years and younger	1st to 2nd birth	0.62	0.88
5	Central and Southern Asia	15-17 years	1st to 2nd birth	0.57	0.64
6	Central and Southern Asia	18-19 years	1st to 2nd birth	0.08	0.08
7	Central and Southern Asia	14 years and younger	2nd to 3rd birth	0.42	0.57
8	Central and Southern Asia	15-17 years	2nd to 3rd birth	0.17	0.20
9	Central and Southern Asia	18-19 years	2nd to 3rd birth	0.02	0.02
10	Central and Southern Asia	14 years and younger	3rd to 4th birth	0.19	0.28

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Adolescent parity progression ratios by mother's age at first birth by cohort
	Region	Age at first birth	5-yr birth cohort	Progression ratio from	Unweighted average	Weighted average
			1940 1995		0.000000000000000 0.945425507554340	0.000000000000000 0.920283108654721
1	Central and Southern Asia	14 years and younger	1940	none to 1st birth	0.10	0.09
2	Central and Southern Asia	15-17 years	1940	none to 1st birth	0.24	0.26
3	Central and Southern Asia	18-19 years	1940	none to 1st birth	0.18	0.22
4	Central and Southern Asia	14 years and younger	1940	1st to 2nd birth	0.95	0.92
5	Central and Southern Asia	15-17 years	1940	1st to 2nd birth	0.72	0.68
6	Central and Southern Asia	18-19 years	1940	1st to 2nd birth	0.10	0.08
7	Central and Southern Asia	14 years and younger	1940	2nd to 3rd birth	0.68	0.63
8	Central and Southern Asia	15-17 years	1940	2nd to 3rd birth	0.31	0.28
9	Central and Southern Asia	18-19 years	1940	2nd to 3rd birth	0.02	0.03
10	Central and Southern Asia	14 years and younger	1940	3rd to 4th birth	0.37	0.30

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4.13.11 Rapid Repeat Birth probability

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Likelihood that an adolescent mother has a rapid repeat birth before turning 20
	Region	5-year birth cohort	Unweighted average	Weighted average
		1940 1995	0.239379749509396 0.363574192507086	0.245555319903329 0.338463861405065
1	Central and Southern Asia	1940	0.35	0.32
2	Central and Southern Asia	1945	0.35	0.32
3	Central and Southern Asia	1950	0.36	0.33
4	Central and Southern Asia	1955	0.36	0.33
5	Central and Southern Asia	1960	0.34	0.34
6	Central and Southern Asia	1965	0.36	0.33
7	Central and Southern Asia	1970	0.31	0.31
8	Central and Southern Asia	1975	0.32	0.30
9	Central and Southern Asia	1980	0.31	0.29
10	Central and Southern Asia	1985	0.28	0.27

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4.13.12 Rapid Repeat Birth proportion

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Proportion of all nonfirst adolescent births that are rapid repeat births before
	Region	5-year birth cohort	Unweighted average	Weighted average
		1940 1995	0.545987964260152 0.754265677799295	0.509778031934519 0.594533072925291
1	Central and Southern Asia	1940	0.55	0.51
2	Central and Southern Asia	1945	0.66	0.51
3	Central and Southern Asia	1950	0.65	0.54
4	Central and Southern Asia	1955	0.69	0.55
5	Central and Southern Asia	1960	0.59	0.54
6	Central and Southern Asia	1965	0.70	0.55
7	Central and Southern Asia	1970	0.69	0.55
8	Central and Southern Asia	1975	0.69	0.54
9	Central and Southern Asia	1980	0.63	0.53
10	Central and Southern Asia	1985	0.63	0.52

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