139 karma · joined July 4, 2014
So smokers or people who jump from planes may not be older compared to those who don't. We don't have a single, reliable instrument that can measure individual level aging.
Consider the phrase "He looks like he aged 20 years, but it has only been 5 years since I last saw him." Everybody understands this to mean that he looks like his health has declined in 5 years the way most people's health would decline in 20 years.
If you replace "health has declined" with "probability of death has increased", then it means roughly the same thing. It is true that the folk understanding of "health has declined" could be based on several proxies such as skin texture, baldness, etc. I think what the probability of death definition does is bring some precision to what you mean when you say "health has declined".
"Survivorship (on a log scale) is depicted by the shaded areas."
Notably, the journal article shades the area underneath the line that is labeled 'survival' in the linked article.
There are some problems with the definition. Humans have very high relative probability of death during their first five years, but this quickly declines and then starts to rise again. This means that humans "age" backwards for the first part of their life, which is not particularly intuitive or helpful. However, the definition is helpful in the context of understanding how our aging compares to aging in other animals.
I know it sounds like I'm asking a lot for a PuTTy window... but mouse clicks have (amazingly) worked even on a very old version of htop. Just wondering if anyone has done it before pursuing it further.
It is not clear if the current meaning of the term pee-yoo is derived from this Indo-European root. The first Oxford English Dictionary entry is in 1604, where it shows up with several different spellings: pue, peuh, peugh, pyoo, and pew [2]. The "stretching" of the word into two syllables must have happened sometime later.
[1] http://www.etymonline.com/index.php?term=putrid
[2] http://www.grammarphobia.com/blog/2010/08/on-the-scent.html
db<-data.frame(replicate(44,1:5))
likertcat <- as.ordered(c("Not at all", "To a small extent", "To some extent",
"To a moderate extent", "To a large extent"))
db[ ,9:44] <- lapply(db[,9:44], function(x) likertcat[x])