File:UK abortion by gestational age 2004 histogram.svg

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UK_abortion_by_gestational_age_2004_histogram.svg‎ (SVG file, nominally 450 × 380 pixels, file size: 16 KB)
Description Histogram of abortions by gestational age for England and Wales in 2004. Horizontal axis is weeks and vertical axis is thousands of abortions.

Data (reproduced below) is taken from Government Statistical Service for the Department of Health. (2005-07-27). Statistical Bulletin - Abortion Statistics, England and Wales: 2004. Table 5 - Legal abortions: gestation weeks by purchaser, 2004, England and Wales, residents (page 13 of the PDF)

Meant to replace File:UKAbortionbyGestationalAgeChart2004.png. A pie chart is a poor way to show this kind of information, and a histogram is better suited to bins of variable width, as presented in the data set. Colors and trimester boundaries are the same as w:Image:Abortionmethods.png for consistency. I did draw the data from 4 weeks out until 40 weeks, but the rectangles are so short they can't be seen.
Date 1 August 2007(2007-08-01)
Source Created by User:Omegatron
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Plotted by hand because it would have taken just as long to learn a new plotting program.
Author Omegatron
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[edit] Data

Gestation
weeks		 Abortions /weeks in bin
4-5 4886 2344
6-7 47230 23615
8-9 59934 29967
10-12 50677 16892
13-14 9962 4981
15-16 5492 2746
17-19 4518 1506
20-21 1592 796
22-23 1198 599
24 41 41
25 21 21
26-27 20 10
28-31 24 6
32+ 18 2
Total 185415

The average gestation for an abortion is thus:

[(4.5)(4688)+(6.5)(47230)+(8.5)(59934)+(11)(50677)+(13.5)(9962)+(15.5)(5492)+(18)(4518)+(20.5)(1592)+(22.5)(1198)+(24)(41)+(25)(21)+(26.5)(20)+(29.5)(24)+(32)(18)]/185415=

[21096+306995+509439+557447+134487+85126+81324+32636+20366+984+525+530+708+576]/185415=

1752239/185415=

9.45 weeks.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current00:08, 4 August 2007Thumbnail for version as of 00:08, 4 August 2007450 × 380 (16 KB)Omegatronadd labels for axes
03:11, 1 August 2007Thumbnail for version as of 03:11, 1 August 2007450 × 380 (16 KB)Omegatronless perfect version with Inkscape scaling to a more normal aspect, added axes, etc.
03:10, 1 August 2007Thumbnail for version as of 03:10, 1 August 2007500 × 500 (8 KB)OmegatronRaw data with 1 px horiz. = week and 500px vert. = 30,000
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Width 450
Height 380
Retrieved from "http://en.wikipedia.org/wiki/File:UK_abortion_by_gestational_age_2004_histogram.svg"
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