2.40 United Republic of Tanzania

2.40.1 Total adolescent births

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Total adolescent births per woman

	Country	5-year birth cohort	Unweighted cases	Total adolescent births
		1940 1995	122 9060	0.637493585914693 1.241955169222350
1	Tanzania	1940	336	1.00
2	Tanzania	1945	1,058	1.24
3	Tanzania	1950	1,857	1.10
4	Tanzania	1955	3,200	1.08
5	Tanzania	1960	6,206	0.84
6	Tanzania	1965	7,911	0.77
7	Tanzania	1970	9,060	0.73
8	Tanzania	1975	8,044	0.67
9	Tanzania	1980	7,498	0.64
10	Tanzania	1985	5,209	0.67

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2.40.2 Total adolescent births by age at first birth

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Total adolescent births per woman by age at first birth

	Country	5-year birth cohort	Age at first birth	Unweighted cases	Total adolescent births
		1940 1995		3 2166	1.018295364261880 3.181566503835320
1	Tanzania	1940	14 years and younger	29	3.18
2	Tanzania	1940	15-17 years	99	1.65
3	Tanzania	1940	18-19 years	74	1.15
4	Tanzania	1945	14 years and younger	133	2.84
5	Tanzania	1945	15-17 years	367	1.99
6	Tanzania	1945	18-19 years	204	1.11
7	Tanzania	1950	14 years and younger	187	2.97
8	Tanzania	1950	15-17 years	607	1.88
9	Tanzania	1950	18-19 years	404	1.13
10	Tanzania	1955	14 years and younger	313	2.91

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

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

	Country	5-year birth cohort	Age at first birth	Unweighted cases	Proportion
		1940 1995		3 2166	0.072258308507128 0.567914346572247
1	Tanzania	1940	14 years and younger	29	0.24
2	Tanzania	1940	15-17 years	99	0.49
3	Tanzania	1940	18-19 years	74	0.27
4	Tanzania	1945	14 years and younger	133	0.27
5	Tanzania	1945	15-17 years	367	0.56
6	Tanzania	1945	18-19 years	204	0.17
7	Tanzania	1950	14 years and younger	187	0.23
8	Tanzania	1950	15-17 years	607	0.55
9	Tanzania	1950	18-19 years	404	0.22
10	Tanzania	1955	14 years and younger	313	0.22

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2.40.4 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)

	Country	Age at first birth	Unweighted cases	Proportion
			2293 12456	0.136644982647565 0.525298867825814
1	Tanzania	14 years and younger	2,293	0.14
2	Tanzania	15-17 years	12,456	0.53
3	Tanzania	18-19 years	12,382	0.34

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2.40.5 Completed fertility by motherhood entry age

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Children ever born by motherhood entry age, women aged 40 and older

	Country	5-year birth cohort	Age at first birth	Unweighted cases	Number of children
		1940 1975		32 2245	5.020315651453330 7.848258961623540
1	Tanzania	1940	All mothers	325	7.44
2	Tanzania	1940	In adolescence	202	7.85
3	Tanzania	1940	After adolescence	123	6.75
4	Tanzania	1945	All mothers	1,024	7.37
5	Tanzania	1945	In adolescence	704	7.81
6	Tanzania	1945	After adolescence	320	6.44
7	Tanzania	1950	All mothers	1,147	7.01
8	Tanzania	1950	In adolescence	752	7.67
9	Tanzania	1950	After adolescence	395	5.93
10	Tanzania	1955	All mothers	1,251	6.72

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

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Difference in completed fertility between adolescent and non-adolescent mothers

	Country	5-year birth cohort	Difference in number of births
		1940 1975	0.817889430867905 1.740177726609820
1	Tanzania	1940	1.10
2	Tanzania	1945	1.37
3	Tanzania	1950	1.74
4	Tanzania	1955	1.08
5	Tanzania	1960	1.16
6	Tanzania	1965	1.16
7	Tanzania	1970	1.36
8	Tanzania	1975	0.82

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2.40.7 Contribution of adolescent fertility to total fertility by cohort

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Contribution of adolescent fertility to total fertility by cohort

	Country	5-year birth cohort	Unweighted cases	Proportion
		1940 1975	80 2245	0.134148909626553 0.177670181487997
1	Tanzania	1940	325	0.14
2	Tanzania	1945	1,024	0.17
3	Tanzania	1950	1,147	0.16
4	Tanzania	1955	1,251	0.18
5	Tanzania	1960	2,245	0.15
6	Tanzania	1965	2,038	0.14
7	Tanzania	1970	1,272	0.15
8	Tanzania	1975	80	0.13

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2.40.8 Mean age at first birth

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Mean age at first birth, women with first birth before age 30

	Country	5-year birth cohort	Unweighted cases	Mean age
		1940 1985	94 4764	18.78803328286130 20.34509593403960
1	Tanzania	1940	325	19.82
2	Tanzania	1945	1,024	18.79
3	Tanzania	1950	1,823	19.32
4	Tanzania	1955	2,927	18.87
5	Tanzania	1960	4,303	19.60
6	Tanzania	1965	4,126	19.80
7	Tanzania	1970	4,764	19.93
8	Tanzania	1975	3,390	20.07
9	Tanzania	1980	1,655	20.35
10	Tanzania	1985	94	19.32

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2.40.9 Adolescent parity progression ratios

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Adolescent parity progression ratios

	Country	5-year birth cohort	Progression ratio from	Unweighted cases	Ratio
		1940 1995		0 4580	0.000000000000000 0.655009391105576
1	Tanzania	1940	none to 1st birth	202	0.61
2	Tanzania	1940	1st to 2nd birth	97	0.41
3	Tanzania	1940	2nd to 3rd birth	36	0.40
4	Tanzania	1940	3rd to 4th birth	11	0.31
5	Tanzania	1940	4th to 5th birth	3	0.33
6	Tanzania	1945	none to 1st birth	704	0.66
7	Tanzania	1945	1st to 2nd birth	408	0.59
8	Tanzania	1945	2nd to 3rd birth	160	0.37
9	Tanzania	1945	3rd to 4th birth	48	0.33
10	Tanzania	1945	4th to 5th birth	8	0.19

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2.40.10 Adolescent parity progression ratios by age

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Adolescent parity progression ratios by mother's age at first birth

	Country	5-year birth cohort	Age at first birth	Progression ratio from	Unweighted cases	Ratio
		1940 1995			0 2166	0.000000000000000 1.000000000000000
1	Tanzania	1940	14 years and younger	none to 1st birth	29	0.08
2	Tanzania	1940	15-17 years	none to 1st birth	99	0.30
3	Tanzania	1940	18-19 years	none to 1st birth	74	0.23
4	Tanzania	1940	14 years and younger	1st to 2nd birth	25	0.90
5	Tanzania	1940	15-17 years	1st to 2nd birth	61	0.50
6	Tanzania	1940	18-19 years	1st to 2nd birth	11	0.15
7	Tanzania	1940	14 years and younger	2nd to 3rd birth	21	0.88
8	Tanzania	1940	15-17 years	2nd to 3rd birth	15	0.26
9	Tanzania	1940	18-19 years	2nd to 3rd birth	0	0.00
10	Tanzania	1940	14 years and younger	3rd to 4th birth	9	0.43

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2.40.11 Rapid Repeat Birth probability

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Likelihood that an adolescent mother has a rapid repeat birth

	Country	5-year birth cohort	Likelihood
			0.175762834624077 0.352992038035538
1	Tanzania	1940	0.30
2	Tanzania	1945	0.35
3	Tanzania	1950	0.34
4	Tanzania	1955	0.29
5	Tanzania	1960	0.25
6	Tanzania	1965	0.23
7	Tanzania	1970	0.23
8	Tanzania	1975	0.20
9	Tanzania	1980	0.18
10	Tanzania	1985	0.20

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2.40.12 Rapid Repeat Birth proportion

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Proportion of nonfirst adolescent births that are rapid repeat births

	Country	5-year birth cohort	Unweighted cases (non-first adolescent births)	Proportion
		1940 1995	25 2144	0.401882380459181 0.561332111303651
1	Tanzania	1940	148	0.54
2	Tanzania	1945	624	0.52
3	Tanzania	1950	969	0.52
4	Tanzania	1955	1,532	0.47
5	Tanzania	1960	2,140	0.45
6	Tanzania	1965	2,122	0.44
7	Tanzania	1970	2,144	0.44
8	Tanzania	1975	1,505	0.43
9	Tanzania	1980	1,245	0.40
10	Tanzania	1985	865	0.44

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