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Extracting age and gender from accident narratives

Recall from the video, you want to parse out age and gender from accident narratives. For example, this narrative

19YOM-SHOULDER STRAIN-WAS TACKLED WHILE PLAYING FOOTBALL W/ FRIENDS 

describes male of age 19, and this one

TRIPPED OVER CAT AND LANDED ON HARDWOOD FLOOR. LACERATION ELBOW, LEFT. 33 YOF*

a female of age 33.

You are generally looking for a pattern with a number, something to indicate the units, e.g. YO or YR for years old, or MO for months old, and a character that identifies the gender.

In this exercise you'll build up a pattern to pull out the part of the narrative that has the age and gender information. Then, in the next exercise you'll parse out the age and gender into separate variables.

本练习是课程的一部分

String Manipulation with stringr in R

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交互式实操练习

通过完成这段示例代码来试试这个练习。

# Pattern to match one or two digits
age <- ___

# Test it
str_view(narratives, pattern = age)
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