Secondly, the missing heart rate data at one time point could have influenced the results.
Missing heart rate recordings (H1, n = 6, H2, n = 3, H3, n = 3, H4, n = 6) were due to recording failure (42%) or signal-analysis failure (58%).
I've worn this watch off and on few a few weeks now and, although I do definitely miss the heart rate monitor for workouts, the fact that this thing looks and acts like a normal watch 99% of the time makes it quite interesting.
Variables with the largest amount of missing data were mainly related to pre-admission assessment of the patients, such as the pre-operative spirometry and pulmonary function tests 31-877% missing), pre-admission heart rate (35% missing), pre-admission blood pressure (27% missing).
Since only 3 patients were missing any data on clinical diagnostic variables (1 patient was missing data on heart rate and 2 patients were missing data on tears), we used case-wise deletion to handle missing data instead of single or multiple imputation.
The variables with ⩾10% of missing values (chills, heart rate, respiratory rate and fibrinogen) were excluded.
Of the 8,561 participants 40 years of age or older who had available ECG measurements, we excluded 194 participants with missing QT interval duration or heart rate, 535 participants with QRS ≥120 ms, and 37 participants with missing data on coffee, tea, or alcohol intake, smoking, or physical activity.
When comparing the distribution of missing data, all variables included in LODS and PEDIA were missing at random, while five out of seven variables in the SICK score were more likely to be missing in children who died (heart rate, respiratory rate, systolic blood pressure, temperature, SpO2) (Additional file 1: Table S1).
f Data on heart rate were missing for 2 patients without ACS.
"We've got one nurse who bubbles anaesthetic gas through a tube that goes in through its mouth and over its gills, and then we have a second nurse to monitor with a probe to check the heart rate," Miss Bethell said.
James showed no ill-effects after a fitness scare on Wednesday when he missing training because of a raised heart rate.
