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Dataset · UNICEF and WHO (Joint Low Birthweight Estimates)

Low Birthweight Prevalence

21 years, 2000–2020 · 158 countries · 3 measures

Low birthweight is the share of babies born weighing less than 2,500 grams. It reflects the health and nutrition of mothers during pregnancy, and it is one of the strongest predictors of whether a newborn survives its first month.

This site holds every year from 2000 to 2020, read from UNICEF and WHO (Joint Low Birthweight Estimates)’s own data and stored exactly as published.

Low Birthweight Prevalence · the file

Newest
Low Birthweight Prevalence, 2020
Held
21 years · 3,318 rows
Licence
CC BY 3.0 IGO

0121 years

Every year

Every year comes from UNICEF and WHO (Joint Low Birthweight Estimates)’s 2023 release, recalculated on one method. Each opens the full table for that year; each downloads as a CSV.

2000bar height: countries covered, up to 1582020
Every year of Low Birthweight Prevalence held on this site, newest first, with its download files.
YearCountriesChangeReadDownload
Low Birthweight Prevalence, 2020Newest158±0September 29, 2026CSV
Low Birthweight Prevalence, 2019158±0September 29, 2026CSV
Low Birthweight Prevalence, 2018158±0September 29, 2026CSV
Low Birthweight Prevalence, 2017158±0September 29, 2026CSV
Low Birthweight Prevalence, 2016158±0September 29, 2026CSV
Low Birthweight Prevalence, 2015158±0September 29, 2026CSV
Low Birthweight Prevalence, 2014158±0September 29, 2026CSV
Low Birthweight Prevalence, 2013158±0September 29, 2026CSV
Low Birthweight Prevalence, 2012158±0September 29, 2026CSV
Low Birthweight Prevalence, 2011158±0September 29, 2026CSV
Low Birthweight Prevalence, 2010158±0September 29, 2026CSV
Low Birthweight Prevalence, 2009158±0September 29, 2026CSV
Show all 21 years
YearCountriesChangeReadDownload
Low Birthweight Prevalence, 2008158±0September 29, 2026CSV
Low Birthweight Prevalence, 2007158±0September 29, 2026CSV
Low Birthweight Prevalence, 2006158±0September 29, 2026CSV
Low Birthweight Prevalence, 2005158±0September 29, 2026CSV
Low Birthweight Prevalence, 2004158±0September 29, 2026CSV
Low Birthweight Prevalence, 2003158±0September 29, 2026CSV
Low Birthweight Prevalence, 2002158±0September 29, 2026CSV
Low Birthweight Prevalence, 2001158±0September 29, 2026CSV
Low Birthweight Prevalence, 2000158—September 29, 2026CSV

Every year in one file, one row per country per year: low-birthweight-all-editions-nations-inquiry.csv

025 columns

What’s in the file

Every column, what it holds, how it is stored and what its values look like — what a reader needs before opening the file.

Every column in the newest file of Low Birthweight Prevalence: what it holds, how it is stored, and its range.
ColumnWhat it holdsStored asRange, 2020DistinctEmptySpread
CountrycountryNameThe country’s name, as this file spells it.Text—1580
ISO Codecountry_codeIdentifierThe ISO 3166-1 alpha-3 code, added by this site. Every table here joins on it.Text · 3 letters—1580
Live births weighing under 2,500 g (%)low_birthweightHeadlineThe headline figure: Live births weighing under 2,500 g (%).Number · up to 9 decimals3.9928Iceland27.4353Indiamiddle 10.21231580
Lower bound (95% credible interval)lowerwhiskerMeasureLower end of the 95% credible interval around the estimate, in percent of live births.Number · up to 9 decimals3.490San Marino25.448Indiamiddle 8.7431580
Upper bound (95% credible interval)upperwhiskerMeasureUpper end of the 95% credible interval around the estimate, in percent of live births.Number · up to 9 decimals4.191Finland29.545Indiamiddle 11.7221580

Profiled from the newest file. Range: the lowest and highest value, with the country holding it when only one does. Spread: countries in ten equal steps from lowest to highest. A higher value is the worse result.

03158 countries across every year

Who is covered

How many countries each year holds, continent by continent, who joined and who left, and which places this site covers that the dataset never has.

All regions
Countries in each year of Low Birthweight Prevalence, by continent.
200920102011201220132014201520162017201820192020
Africa383838383838383838383838
Americas292929292929292929292929
Asia404040404040404040404040
Europe424242424242424242424242
Oceania999999999999
All158158158158158158158158158158158158

The newest 12 of 21 years.

The same 158 countries in every year.

04Provenance

Where it comes from

The path from the publisher to this page, and what was checked and changed on the way.

The site’s method
  1. 1 · Publisher

    UNICEF and WHO (Joint Low Birthweight Estimates)

  2. 2 · Their file

    UNICEF-WHO Low Birthweight Estimates, 2023 edition — 2020

  3. 3 · Read by this site

    September 29, 2026

    Imported by a script that parses each figure and writes it down unrounded.
  4. 4 · Stored as

    21 files, one per year

    Each downloads as a CSV, or every year together as low-birthweight-all-editions-nations-inquiry.csv
  5. 5 · Used on

    Its statistic page, and every profile it measures

Precision

The headline is stored to 9 decimals, as published.

Rounded by this site

Never. Tables on screen may show fewer decimals; the files never do.

Changed by this site

Reshaped into one row per country: regional and income-group totals are left out, only the columns listed are kept, each row gets its ISO 3166 code, and some country names are brought to one spelling. No value is recalculated, rescaled or rounded.

From the UNICEF-WHO Joint Low Birthweight Estimates, read from the producers' own workbook, which carries the estimates in full where UNICEF's data warehouse trims them to four decimals.

05Reuse

Licence and credit

What the publisher’s licence lets you do, what it asks of you, and a credit line and citation ready to copy.

Every publisher’s terms

Licence · checked September 29, 2026

CC BY 3.0 IGO

  • Share and redistribute it
  • Adapt it and build on it
  • Use it commercially
  • Credit the publisher
  • Say what you changed

The version of CC BY written for intergovernmental organisations. Credit the publisher and say what you changed.

In plain words

Published by UNICEF under CC BY 3.0 IGO. The estimates are produced jointly with WHO, whose own copy carries narrower, non-commercial terms; this file is UNICEF's copy.

A credit line

Source: UNICEF and WHO (Joint Low Birthweight Estimates), Low Birthweight Prevalence, via Nations Inquiry.

Cite this dataset

UNICEF and WHO (Joint Low Birthweight Estimates). Low Birthweight Prevalence, 2000–2020 [data set]. As held by Nations Inquiry, https://nationsinquiry.com/datasets/low-birthweight

The publisher’s own citation: UNICEF and WHO. UNICEF-WHO Low Birthweight Estimates, 2023 edition. New York and Geneva: UNICEF and WHO.

Plain-language summary, not legal advice. The licence text is what binds.

06Where it is used

Around the site

Where these numbers appear on this site, and the datasets nearest to it.

07Questions

Low Birthweight Prevalence: questions and answers

What is the Low Birthweight Prevalence?

Low birthweight is the share of babies born weighing less than 2,500 grams. It reflects the health and nutrition of mothers during pregnancy, and it is one of the strongest predictors of whether a newborn survives its first month.

Which years of the Low Birthweight Prevalence can I download?

All 21, from 2000 to 2020, each as a CSV file, or every year together in one CSV.

Does UNICEF and WHO (Joint Low Birthweight Estimates) rank countries on it?

No. UNICEF and WHO (Joint Low Birthweight Estimates) publishes values only. The positions shown on this site are derived by ordering the published values, and are labelled as ours.

Can I use it commercially?

Yes, under CC BY 3.0 IGO, with credit to UNICEF and WHO (Joint Low Birthweight Estimates). The licence text is linked on this page.

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