tldr CSVs with my open-source sleep and steps data from JawBone, BodyMedia and FitBit for March 2014.
Who am I? I'm Andrei Ismail, a software engineer from Bucharest/Romania who is extremely passionate about wearables and sensors.
What is this? Since March 2014, I've been wearing 3 devices all the time (well, almost). BodyMedia on my upper left arm, FitBit on my left wrist and Jawbone on my right wrist.
There are numerous comparisons floating around on the internet, but no data to play around with. So after working quite a bit to pull my data from these devices and parse it to a common ground, I decided to donate it to the outer world and see what comes out of that.
Do you have more prose? Sure - I've started a blog at https://aismail85.tumblr.com Feel free to follow that, because interesting updates will follow :)
The file formats are quite obvious.
Of course, my Padawan leader :) I've used the following methodology:
Formula for stddev(x, y)
where x and y are the two timeseries:
stddev = std(z) / average(zavg), where:
Caveats:
Measurement | Algorithm | Time period | Resolution | BM - JB | JB - FB | FB - BM |
---|---|---|---|---|---|---|
Steps | Pearson | 01.03 -> | hourly | 0.79768 | 0.96161 | 0.80869 |
Steps | Pearson | 01.03 -> | daily | 0.91861 | 0.97338 | 0.95733 |
Steps | Pearson | 03.03 -> | hourly | 0.92751 | 0.96509 | 0.94692 |
Steps | Pearson | 03.03 -> | daily | 0.93781 | 0.97795 | 0.95244 |
Steps | Stddev | 01.03 -> | hourly | 1.38285 | 0.56597 | 1.44420 |
Steps | Stddev | 01.03 -> | daily | 0.13171 | 0.07289 | 0.08139 |
Steps | Stddev | 03.03 -> | hourly | 0.78439 | 0.54318 | 0.72679 |
Steps | Stddev | 03.03 -> | daily | 0.12644 | 0.06807 | 0.08291 |
Sleep | Pearson | 01.03 -> | minute | 0.66147 | 0.66858 | 0.72884 |
Sleep | Pearson | 01.03 -> | hourly | 0.73556 | 0.69885 | 0.82961 |
Sleep | Pearson | 01.03 -> | daily | 0.54553 | 0.41885 | 0.67266 |
Sleep | Pearson | 03.03 -> | minute | 0.67447 | 0.68180 | 0.75971 |
Sleep | Pearson | 03.03 -> | hourly | 0.74926 | 0.71177 | 0.86276 |
Sleep | Pearson | 03.03 -> | daily | 0.58691 | 0.43679 | 0.77625 |
Sleep | Stddev | 01.03 -> | minute | 4.53214 | 1.37693 | 1.14523 |
Sleep | Stddev | 01.03 -> | hourly | 1.96155 | 1.24518 | 0.82427 |
Sleep | Stddev | 01.03 -> | daily | 0.34736 | 0.36867 | 0.16855 |
Sleep | Stddev | 03.03 -> | minute | 4.67203 | 1.36439 | 1.10743 |
Sleep | Stddev | 03.03 -> | hourly | 1.95817 | 1.87552 | 0.76691 |
Sleep | Stddev | 03.03 -> | daily | 0.34514 | 0.38790 | 0.17970 |