Image: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)

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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 w:Image: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.

Source

Created by User:Omegatron

This vector image was created with Inkscape.

Plotted by hand because it would have taken just as long to learn a new plotting program.

Date

2007-08-01

Author

Omegatron

Permission
(Reusing this image)

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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/Time	Dimensions	User	Comment
current	00:08, 4 August 2007	450×380 (16 KB)	Omegatron	(add labels for axes)
	03:11, 1 August 2007	450×380 (16 KB)	Omegatron	(less perfect version with Inkscape scaling to a more normal aspect, added axes, etc.)
	03:10, 1 August 2007	500×500 (8 KB)	Omegatron	(Raw data with 1 px horiz. = week and 500px vert. = 30,000)