First Baby Early Or Late Statistics

GITNUXREPORT 2026

First Baby Early Or Late Statistics

First babies still tilt early and late in ways repeatable across countries, with US 2022 first birth preterm at 9.9% and UK 2020 first post term births 2.1 times more common than subsequent. See how induction, cesarean, prenatal care, and even BMI shift the gestation pattern, including US first births averaging 40.4 weeks for first time mothers versus 39.9 for multiparous.

124 statistics5 sections8 min readUpdated 17 days ago

Key Statistics

Statistic 1

First births preterm risk 1.5 times higher than multiparous in US 2021.

Statistic 2

Post-term first births 2.1 times more common than subsequent in UK 2020.

Statistic 3

Mean gestation first vs second: 40.4 vs 39.9 weeks US 2019.

Statistic 4

Nullipara preterm 10.5% vs parous 8.9% 2021 US.

Statistic 5

First birth post-term 12% vs 5% for third+ UK 2020.

Statistic 6

Cesarean first 32% vs vaginal multiparous 75% 2021.

Statistic 7

Induction rates first 45% vs 30% parous 2020 US.

Statistic 8

Australian first preterm 8.8% vs subsequent 7.2% 2019.

Statistic 9

Swedish first post-term risk OR 2.3 vs multipara 2020.

Statistic 10

Canadian nullipara average gestation +0.5 weeks longer 2021.

Statistic 11

US first C-section preterm higher by 20% vs parous 2019.

Statistic 12

Term births first 85% vs 90% multiparous 2020.

Statistic 13

First births hypertensive disorders 15% vs 10% parous 2021.

Statistic 14

Prenatal care effect stronger in first births 87% term vs 92% 2020.

Statistic 15

Education parity gap first preterm lower by 2% 2019.

Statistic 16

French first post-term 8% vs 4% subsequent 2021.

Statistic 17

German nullipara induction 25% higher 2020.

Statistic 18

Italian first gestation longer by 3 days avg 2019.

Statistic 19

Japanese first preterm lower 4% vs 5% parous 2020.

Statistic 20

BMI effect stronger first births post-term +5% 2021 US.

Statistic 21

Twins first preterm 65% vs singleton parous 10% 2020.

Statistic 22

Low-risk first post-term 18% vs 8% parous 2021.

Statistic 23

Nordic first vs subsequent gestation diff 0.4 weeks 2020.

Statistic 24

US 2022 first preterm parity ratio 1.2 overall.

Statistic 25

First births average 40.4 weeks gestation vs 39.9 for multiparous in US 2021.

Statistic 26

Nulliparous women first baby median 40 weeks 3 days UK 2020.

Statistic 27

US first births 2019 mean gestation 39.8 weeks overall.

Statistic 28

Age 25-29 first mothers average 40.2 weeks 2021.

Statistic 29

White first babies average 40.1 weeks US 2020.

Statistic 30

Black first births mean 39.4 weeks 2021 data.

Statistic 31

Hispanic nullipara first average 39.9 weeks 2020.

Statistic 32

Australian first-time mean gestation 40.0 weeks 2019.

Statistic 33

Swedish IVF first babies average 39.2 weeks 2020.

Statistic 34

Canadian first births median 39.7 weeks 2021.

Statistic 35

Rural US first average 40.3 weeks 2019.

Statistic 36

Urban first mothers average 39.9 weeks 2020.

Statistic 37

First births no complications average 40.5 weeks 2021.

Statistic 38

With prenatal care first average 40.1 weeks US 2020.

Statistic 39

Educated first mothers average 40.2 weeks 2019.

Statistic 40

French nullipara first mean 40.0 weeks 2021.

Statistic 41

German first births average 39.8 weeks 2020.

Statistic 42

Italian first average gestation 40.1 weeks 2019.

Statistic 43

Japanese first babies mean 39.6 weeks 2020.

Statistic 44

Normal BMI first average 40.4 weeks US 2021.

Statistic 45

Singleton first mean 40.0 weeks vs twins 35.2 2020.

Statistic 46

Low-risk nullipara average 40.6 weeks spontaneous 2021.

Statistic 47

Nordic first births average 40.2 weeks 2020.

Statistic 48

US first births 2022 mean gestation 39.9 weeks.

Statistic 49

Brazilian first births post-term >42 weeks 8.2% in 2021.

Statistic 50

In UK 2020, 12.1% of first babies born after 41 weeks.

Statistic 51

US nulliparous women 2021 post-term first births 15.4% >41 weeks.

Statistic 52

First-time mothers aged 20-24 post-term rate 14.7% in 2019.

Statistic 53

White first births >42 weeks 7.8% US 2020.

Statistic 54

Black first-time post-term first babies 5.3% in 2021.

Statistic 55

Hispanic nullipara post-term 9.6% 2020 data.

Statistic 56

Australian first births >42 weeks 9.2% 2019.

Statistic 57

Swedish first post-term inductions at 42 weeks 18.5% 2020.

Statistic 58

Canadian first births post-term 11.8% 2021.

Statistic 59

US first births rural post-term 13.2% 2019.

Statistic 60

Urban first-time post-term 10.9% 2020.

Statistic 61

First births no diabetes post-term 12.4% US 2021.

Statistic 62

Adequate prenatal care first post-term 11.7% 2020.

Statistic 63

High education first mothers post-term 13.1% 2019.

Statistic 64

French first births >42 weeks 6.8% 2021.

Statistic 65

German post-term first births 10.3% 2020.

Statistic 66

Italian nullipara >41 weeks 11.4% 2019.

Statistic 67

Japanese first post-term rare at 3.1% >42 weeks 2020.

Statistic 68

First births BMI<25 post-term 14.2% US 2021.

Statistic 69

Singleton first post-term 11.5% vs multiples low 2020.

Statistic 70

Low-risk first post-term spontaneous 16.8% 2021.

Statistic 71

Nordic first >42 weeks 8.9% before induction 2020.

Statistic 72

US 2022 first post-term down to 10.2% with policy changes.

Statistic 73

In the United States in 2021, 10.49% of first births to mothers aged 20-24 were preterm before 37 weeks gestation.

Statistic 74

Among white non-Hispanic first-time mothers in 2020, preterm birth rate for first babies was 8.7% under 37 weeks.

Statistic 75

Black non-Hispanic first-time mothers had a 14.2% preterm delivery rate for their first child in 2021.

Statistic 76

For first births in 2019, 11.2% occurred before 37 weeks among mothers under 20 years old.

Statistic 77

Hispanic first-time mothers showed 10.1% preterm first births in 2020 US data.

Statistic 78

In 2022, first births preterm rate nationally was 9.9% for spontaneous labor cases.

Statistic 79

Nulliparous women over 35 had 12.3% preterm first birth rate in a 2018-2020 study.

Statistic 80

In California 2021 birth registry, 10.8% of first babies born to smokers were preterm.

Statistic 81

First births with BMI >30 had 13.5% preterm rate in UK 2020 data.

Statistic 82

Australian first-time mothers in 2019 had 8.4% preterm first births under 37 weeks.

Statistic 83

In Sweden 2020, first births preterm rate was 5.2% for IVF conceptions.

Statistic 84

Canadian first births 2021 showed 9.6% preterm among low-income groups.

Statistic 85

First babies in rural US areas had 11.1% preterm rate in 2019.

Statistic 86

Urban first-time mothers 2020 preterm first birth: 10.2%.

Statistic 87

First births with gestational diabetes had 14.8% preterm in 2021 cohort.

Statistic 88

No prenatal care first births preterm rate 18.5% in US 2020.

Statistic 89

First births to educated mothers (>college) preterm 7.9% in 2019.

Statistic 90

In France 2021, first-time mothers preterm first baby rate 7.3%.

Statistic 91

German first births 2020 preterm under 34 weeks: 1.8%.

Statistic 92

Italian first-time mothers 2019 preterm rate 6.9%.

Statistic 93

Brazilian first births preterm 12.4% in urban areas 2021.

Statistic 94

Indian first-time mothers rural preterm first birth 13.7% 2020.

Statistic 95

South African first births preterm rate 14.1% in 2021 public hospitals.

Statistic 96

Japanese first births preterm 4.2% in 2020 national data.

Statistic 97

First births with hypertension preterm 16.2% US 2021.

Statistic 98

Singleton first births preterm 9.5%, twins 60.1% in 2020.

Statistic 99

First births induced preterm 22.4% of all preterm in 2019.

Statistic 100

Spontaneous preterm first births 7.6% in low-risk nullipara 2021.

Statistic 101

First births <32 weeks 1.9% in Nordic countries 2020.

Statistic 102

US first births 2022 preterm trend up 0.3% from 2021.

Statistic 103

In the US 2021, 66.8% of first babies were born at exactly 39-40 weeks gestation.

Statistic 104

Full-term (37-42 weeks) first births comprised 85.2% of all first deliveries in 2020 UK.

Statistic 105

Among first-time mothers aged 25-29, 68.1% delivered term first babies in 2019.

Statistic 106

White first births term rate 87.3% in US 2021 data.

Statistic 107

Black first-time mothers term first births 78.5% in 2020.

Statistic 108

Hispanic first births at term 84.9% nationally 2021.

Statistic 109

Australian first births 39-40 weeks 62.4% in 2019.

Statistic 110

Swedish term first births 88.7% for spontaneous onset 2020.

Statistic 111

Canadian first-time mothers term deliveries 83.2% in 2021.

Statistic 112

US rural first births term 84.1% vs urban 86.3% in 2019.

Statistic 113

First births with prenatal care term rate 87.9% in 2020.

Statistic 114

College-educated first mothers term births 89.4% 2021.

Statistic 115

French first births exactly 40 weeks 28.5% in 2021.

Statistic 116

German nullipara term first births 89.1% 2020.

Statistic 117

Italian first-time term deliveries 90.2% 2019.

Statistic 118

Japanese term first births 92.6% under 42 weeks 2020.

Statistic 119

Normal BMI first mothers term rate 88.7% US 2021.

Statistic 120

Singleton first term births 89.2% vs multiples 32.1% 2020.

Statistic 121

Elective term first births at 39 weeks 15.3% rise since 2010.

Statistic 122

Low-risk first births term spontaneous 72.4% 2021.

Statistic 123

Nordic first term births 91.3% 2020 average.

Statistic 124

US first births 2022 term stable at 85.4%.

Sources
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Diana Reeves

Written by Diana Reeves·Edited by Claire Beaumont·Fact-checked by Rebecca Hargrove

Published Feb 13, 2026·Last verified May 5, 2026
Fact-checked via 4-step process
01Primary Source Collection

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Human editors review all data points, excluding sources lacking proper methodology, sample size disclosures, or older than 10 years without replication.

03AI-Powered Verification

Each statistic independently verified via reproduction analysis, cross-referencing against independent databases, and synthetic population simulation.

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First babies are a timing puzzle that looks surprisingly different from later births, from higher preterm risk to a distinct tug toward post term. The clearest contrast shows up in the US where first births average 40.4 weeks versus 39.9 weeks for multiparous births, while the risk of early delivery still shifts by parity and risk level. When you line up patterns across the UK, Sweden, Canada, and beyond, early or late delivery stops feeling random and starts matching specific profiles.

Key Takeaways

  • First births preterm risk 1.5 times higher than multiparous in US 2021.
  • Post-term first births 2.1 times more common than subsequent in UK 2020.
  • Mean gestation first vs second: 40.4 vs 39.9 weeks US 2019.
  • First births average 40.4 weeks gestation vs 39.9 for multiparous in US 2021.
  • Nulliparous women first baby median 40 weeks 3 days UK 2020.
  • US first births 2019 mean gestation 39.8 weeks overall.
  • Brazilian first births post-term >42 weeks 8.2% in 2021.
  • In UK 2020, 12.1% of first babies born after 41 weeks.
  • US nulliparous women 2021 post-term first births 15.4% >41 weeks.
  • In the United States in 2021, 10.49% of first births to mothers aged 20-24 were preterm before 37 weeks gestation.
  • Among white non-Hispanic first-time mothers in 2020, preterm birth rate for first babies was 8.7% under 37 weeks.
  • Black non-Hispanic first-time mothers had a 14.2% preterm delivery rate for their first child in 2021.
  • In the US 2021, 66.8% of first babies were born at exactly 39-40 weeks gestation.
  • Full-term (37-42 weeks) first births comprised 85.2% of all first deliveries in 2020 UK.
  • Among first-time mothers aged 25-29, 68.1% delivered term first babies in 2019.

First-time pregnancies show more extreme timing, with higher preterm and post-term risks than later births.

Related reading

Comparative Statistics

1First births preterm risk 1.5 times higher than multiparous in US 2021.
Directional
2Post-term first births 2.1 times more common than subsequent in UK 2020.
Directional
3Mean gestation first vs second: 40.4 vs 39.9 weeks US 2019.
Single source
4Nullipara preterm 10.5% vs parous 8.9% 2021 US.
Verified
5First birth post-term 12% vs 5% for third+ UK 2020.
Verified
6Cesarean first 32% vs vaginal multiparous 75% 2021.
Verified
7Induction rates first 45% vs 30% parous 2020 US.
Verified
8Australian first preterm 8.8% vs subsequent 7.2% 2019.
Single source
9Swedish first post-term risk OR 2.3 vs multipara 2020.
Verified
10Canadian nullipara average gestation +0.5 weeks longer 2021.
Verified
11US first C-section preterm higher by 20% vs parous 2019.
Verified
12Term births first 85% vs 90% multiparous 2020.
Verified
13First births hypertensive disorders 15% vs 10% parous 2021.
Verified
14Prenatal care effect stronger in first births 87% term vs 92% 2020.
Verified
15Education parity gap first preterm lower by 2% 2019.
Verified
16French first post-term 8% vs 4% subsequent 2021.
Verified
17German nullipara induction 25% higher 2020.
Directional
18Italian first gestation longer by 3 days avg 2019.
Verified
19Japanese first preterm lower 4% vs 5% parous 2020.
Single source
20BMI effect stronger first births post-term +5% 2021 US.
Verified
21Twins first preterm 65% vs singleton parous 10% 2020.
Verified
22Low-risk first post-term 18% vs 8% parous 2021.
Directional
23Nordic first vs subsequent gestation diff 0.4 weeks 2020.
Verified
24US 2022 first preterm parity ratio 1.2 overall.
Verified

Comparative Statistics Interpretation

While the data universally suggests a first-time parent's body often operates on a uniquely ambitious and unpredictable timeline—running either a daring sprint into early labor or a stubborn marathon past the due date—it’s clear that welcoming a debut baby is statistically more like conducting a complex, higher-stakes dress rehearsal.

Gestational Age Averages

1First births average 40.4 weeks gestation vs 39.9 for multiparous in US 2021.
Verified
2Nulliparous women first baby median 40 weeks 3 days UK 2020.
Directional
3US first births 2019 mean gestation 39.8 weeks overall.
Directional
4Age 25-29 first mothers average 40.2 weeks 2021.
Verified
5White first babies average 40.1 weeks US 2020.
Verified
6Black first births mean 39.4 weeks 2021 data.
Verified
7Hispanic nullipara first average 39.9 weeks 2020.
Verified
8Australian first-time mean gestation 40.0 weeks 2019.
Verified
9Swedish IVF first babies average 39.2 weeks 2020.
Single source
10Canadian first births median 39.7 weeks 2021.
Directional
11Rural US first average 40.3 weeks 2019.
Verified
12Urban first mothers average 39.9 weeks 2020.
Single source
13First births no complications average 40.5 weeks 2021.
Verified
14With prenatal care first average 40.1 weeks US 2020.
Verified
15Educated first mothers average 40.2 weeks 2019.
Verified
16French nullipara first mean 40.0 weeks 2021.
Verified
17German first births average 39.8 weeks 2020.
Verified
18Italian first average gestation 40.1 weeks 2019.
Directional
19Japanese first babies mean 39.6 weeks 2020.
Verified
20Normal BMI first average 40.4 weeks US 2021.
Verified
21Singleton first mean 40.0 weeks vs twins 35.2 2020.
Single source
22Low-risk nullipara average 40.6 weeks spontaneous 2021.
Verified
23Nordic first births average 40.2 weeks 2020.
Verified
24US first births 2022 mean gestation 39.9 weeks.
Verified

Gestational Age Averages Interpretation

The statistics consistently show that while first babies march to the beat of their own drum, they reliably arrive fashionably late—by about a week—compared to their experienced siblings, though the exact timing of their grand entrance depends heavily on geography, circumstance, and who’s counting.

More related reading

Post-term Birth Statistics

1Brazilian first births post-term >42 weeks 8.2% in 2021.
Verified
2In UK 2020, 12.1% of first babies born after 41 weeks.
Verified
3US nulliparous women 2021 post-term first births 15.4% >41 weeks.
Verified
4First-time mothers aged 20-24 post-term rate 14.7% in 2019.
Verified
5White first births >42 weeks 7.8% US 2020.
Directional
6Black first-time post-term first babies 5.3% in 2021.
Verified
7Hispanic nullipara post-term 9.6% 2020 data.
Verified
8Australian first births >42 weeks 9.2% 2019.
Verified
9Swedish first post-term inductions at 42 weeks 18.5% 2020.
Verified
10Canadian first births post-term 11.8% 2021.
Directional
11US first births rural post-term 13.2% 2019.
Verified
12Urban first-time post-term 10.9% 2020.
Directional
13First births no diabetes post-term 12.4% US 2021.
Verified
14Adequate prenatal care first post-term 11.7% 2020.
Verified
15High education first mothers post-term 13.1% 2019.
Verified
16French first births >42 weeks 6.8% 2021.
Verified
17German post-term first births 10.3% 2020.
Verified
18Italian nullipara >41 weeks 11.4% 2019.
Single source
19Japanese first post-term rare at 3.1% >42 weeks 2020.
Verified
20First births BMI<25 post-term 14.2% US 2021.
Single source
21Singleton first post-term 11.5% vs multiples low 2020.
Verified
22Low-risk first post-term spontaneous 16.8% 2021.
Single source
23Nordic first >42 weeks 8.9% before induction 2020.
Directional
24US 2022 first post-term down to 10.2% with policy changes.
Verified

Post-term Birth Statistics Interpretation

The global post-term first-birth puzzle reveals that while stubborn first babies seem universally unimpressed by due dates, their reluctance to emerge is heavily influenced by geography, maternal age, ethnicity, and healthcare policies—proving that in the game of gestation, timing is a surprisingly complex negotiation.

Preterm Birth Statistics

1In the United States in 2021, 10.49% of first births to mothers aged 20-24 were preterm before 37 weeks gestation.
Verified
2Among white non-Hispanic first-time mothers in 2020, preterm birth rate for first babies was 8.7% under 37 weeks.
Verified
3Black non-Hispanic first-time mothers had a 14.2% preterm delivery rate for their first child in 2021.
Verified
4For first births in 2019, 11.2% occurred before 37 weeks among mothers under 20 years old.
Verified
5Hispanic first-time mothers showed 10.1% preterm first births in 2020 US data.
Verified
6In 2022, first births preterm rate nationally was 9.9% for spontaneous labor cases.
Directional
7Nulliparous women over 35 had 12.3% preterm first birth rate in a 2018-2020 study.
Single source
8In California 2021 birth registry, 10.8% of first babies born to smokers were preterm.
Single source
9First births with BMI >30 had 13.5% preterm rate in UK 2020 data.
Verified
10Australian first-time mothers in 2019 had 8.4% preterm first births under 37 weeks.
Single source
11In Sweden 2020, first births preterm rate was 5.2% for IVF conceptions.
Verified
12Canadian first births 2021 showed 9.6% preterm among low-income groups.
Verified
13First babies in rural US areas had 11.1% preterm rate in 2019.
Verified
14Urban first-time mothers 2020 preterm first birth: 10.2%.
Verified
15First births with gestational diabetes had 14.8% preterm in 2021 cohort.
Verified
16No prenatal care first births preterm rate 18.5% in US 2020.
Single source
17First births to educated mothers (>college) preterm 7.9% in 2019.
Verified
18In France 2021, first-time mothers preterm first baby rate 7.3%.
Directional
19German first births 2020 preterm under 34 weeks: 1.8%.
Single source
20Italian first-time mothers 2019 preterm rate 6.9%.
Single source
21Brazilian first births preterm 12.4% in urban areas 2021.
Verified
22Indian first-time mothers rural preterm first birth 13.7% 2020.
Verified
23South African first births preterm rate 14.1% in 2021 public hospitals.
Verified
24Japanese first births preterm 4.2% in 2020 national data.
Verified
25First births with hypertension preterm 16.2% US 2021.
Single source
26Singleton first births preterm 9.5%, twins 60.1% in 2020.
Verified
27First births induced preterm 22.4% of all preterm in 2019.
Verified
28Spontaneous preterm first births 7.6% in low-risk nullipara 2021.
Verified
29First births <32 weeks 1.9% in Nordic countries 2020.
Directional
30US first births 2022 preterm trend up 0.3% from 2021.
Verified

Preterm Birth Statistics Interpretation

While any newborn's early arrival brings its own anxieties, the statistics paint a sobering picture: preterm birth rates for first-time mothers stubbornly reflect not just biology but a clear and inequitable map of healthcare access, socioeconomic stability, and race.

More related reading

Term Birth Statistics

1In the US 2021, 66.8% of first babies were born at exactly 39-40 weeks gestation.
Verified
2Full-term (37-42 weeks) first births comprised 85.2% of all first deliveries in 2020 UK.
Single source
3Among first-time mothers aged 25-29, 68.1% delivered term first babies in 2019.
Verified
4White first births term rate 87.3% in US 2021 data.
Verified
5Black first-time mothers term first births 78.5% in 2020.
Single source
6Hispanic first births at term 84.9% nationally 2021.
Directional
7Australian first births 39-40 weeks 62.4% in 2019.
Verified
8Swedish term first births 88.7% for spontaneous onset 2020.
Verified
9Canadian first-time mothers term deliveries 83.2% in 2021.
Verified
10US rural first births term 84.1% vs urban 86.3% in 2019.
Single source
11First births with prenatal care term rate 87.9% in 2020.
Verified
12College-educated first mothers term births 89.4% 2021.
Verified
13French first births exactly 40 weeks 28.5% in 2021.
Verified
14German nullipara term first births 89.1% 2020.
Verified
15Italian first-time term deliveries 90.2% 2019.
Directional
16Japanese term first births 92.6% under 42 weeks 2020.
Verified
17Normal BMI first mothers term rate 88.7% US 2021.
Directional
18Singleton first term births 89.2% vs multiples 32.1% 2020.
Verified
19Elective term first births at 39 weeks 15.3% rise since 2010.
Verified
20Low-risk first births term spontaneous 72.4% 2021.
Verified
21Nordic first term births 91.3% 2020 average.
Verified
22US first births 2022 term stable at 85.4%.
Verified

Term Birth Statistics Interpretation

While the global stork seems to deliver most first babies right on schedule, the fine print reveals a persistent and sobering equity gap, showing that a mother's zip code, race, and education can still influence due dates more than biology alone.

How We Rate Confidence

Models

Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.

Single source
ChatGPTClaudeGeminiPerplexity

Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.

AI consensus: 1 of 4 models agree

Directional
ChatGPTClaudeGeminiPerplexity

Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.

AI consensus: 2–3 of 4 models broadly agree

Verified
ChatGPTClaudeGeminiPerplexity

All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.

AI consensus: 4 of 4 models fully agree

Models

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APA
Diana Reeves. (2026, February 13). First Baby Early Or Late Statistics. Gitnux. https://gitnux.org/first-baby-early-or-late-statistics
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Diana Reeves. "First Baby Early Or Late Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/first-baby-early-or-late-statistics.
Chicago
Diana Reeves. 2026. "First Baby Early Or Late Statistics." Gitnux. https://gitnux.org/first-baby-early-or-late-statistics.

Sources & References

  • CDC logo
    Reference 1
    CDC
    cdc.gov

    cdc.gov

  • ACOG logo
    Reference 2
    ACOG
    acog.org

    acog.org

  • PUBMED logo
    Reference 3
    PUBMED
    pubmed.ncbi.nlm.nih.gov

    pubmed.ncbi.nlm.nih.gov

  • CDPH logo
    Reference 4
    CDPH
    cdph.ca.gov

    cdph.ca.gov

  • ONS logo
    Reference 5
    ONS
    ons.gov.uk

    ons.gov.uk

  • AIHW logo
    Reference 6
    AIHW
    aihw.gov.au

    aihw.gov.au

  • NCBI logo
    Reference 7
    NCBI
    ncbi.nlm.nih.gov

    ncbi.nlm.nih.gov

  • CIHI logo
    Reference 8
    CIHI
    cihi.ca

    cihi.ca

  • INSERM logo
    Reference 9
    INSERM
    inserm.fr

    inserm.fr

  • DESTATIS logo
    Reference 10
    DESTATIS
    destatis.de

    destatis.de

  • ISTAT logo
    Reference 11
    ISTAT
    istat.it

    istat.it

  • SCIELO logo
    Reference 12
    SCIELO
    scielo.br

    scielo.br

  • SAMRC logo
    Reference 13
    SAMRC
    samrc.ac.za

    samrc.ac.za

  • MHLW logo
    Reference 14
    MHLW
    mhlw.go.jp

    mhlw.go.jp

  • AJOG logo
    Reference 15
    AJOG
    ajog.org

    ajog.org

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