Higher Productivity Predicts Very Slightly Lower Walk Or Run Distance for Population
Contents
Mike Sinn
PRINCIPAL INVESTIGATOR
Mike Sinn

Variables

A
Productivity 1156
A
Walk or Run Distance 891

Categories

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Goals 126
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Physical Activity 1719

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Tags

Low Confidence
Very Weak Effect Size
Negative Relationship
Population Study
cause image gauge image effect image
Participants reported a 3.7% average increase in Walk Or Run Distance following above average Productivity.
Abstract

Abstract

Walk Or Run Distance was generally 1% higher than average after an average of 63.1 percent of Productivity over the previous 7 days.

Aggregated data from 1 study participants suggests with a LOW degree of confidence (p=0.373, 95% CI -1994.854 to 1994.708) that Productivity has a very weakly negative predictive relationship (R=-0.073) with Walk Or Run Distance.

The highest quartile of Walk Or Run Distance measurements were observed following an average 68.5 percent Productivity.

The lowest quartile of Walk Or Run Distance measurements were observed following an average 69.5 percent of Productivity.

After an onset delay of 0 seconds, Walk Or Run Distance is typically 2% higher than average over the 7 days following around 69.5 percent Productivity.

Objective

Objective

The objective of this study is to determine the nature of the relationship (if any) between Productivity and Walk Or Run Distance. Additionally, we attempt to determine the Productivity values most likely to produce optimal Walk Or Run Distance values.
Participant Instructions

Participant Instructions

Manual Recording Option

A Create a reminder for Productivity here and record it daily by enabling notifications or using A the reminder inbox here .


Walk Or Run Distance Automatic Import of Walk or Run Distance via Fitbit

A Get Fitbit here and use it to record your Walk or Run Distance. Then, A import your data here .

Walk Or Run Distance Automatic Import of Walk or Run Distance via Google Fit

A Get Google Fit here and use it to record your Walk or Run Distance. Then, A import your data here .

Manual Recording Option

A Create a reminder for Walk or Run Distance here and record it daily by enabling notifications or using A the reminder inbox here .

Walk Or Run Distance Automatic Import of Walk or Run Distance via Withings

A Get Withings here and use it to record your Walk or Run Distance. Then, A import your data here .

Design

Design

This study is based on data donated by 1 participants. Thus, the study design is equivalent to the aggregation of 1 separate n=1 observational natural experiments.

Data Analysis

Data Analysis

Productivity Pre-Processing

No minimum allowed measurement value was defined for Productivity. No maximum allowed measurement value was defined for Productivity. No missing data filling value was defined for Productivity so any gaps in data were just not analyzed instead of assuming zero values for those times.

Walk or Run Distance Pre-Processing

Walk or Run Distance measurement values below 1 meters were assumed erroneous and removed. Walk or Run Distance measurement values above 175000 meters were assumed erroneous and removed. No missing data filling value was defined for Walk or Run Distance so any gaps in data were just not analyzed instead of assuming zero values for those times.

Predictive Analytics

It was assumed that 0 seconds would pass before a change in Productivity would produce an observable change in Walk Or Run Distance.

It was assumed that Productivity could produce an observable change in Walk Or Run Distance for as much as 7 days after the stimulus event.

Statistical Significance

Statistical Significance

Using a two-tailed t-test with alpha = 0.05, it was determined that the change in Walk Or Run Distance is not statistically significant at a 95% confidence interval. This suggests that the Productivity value does not have a significant influence on the Walk Or Run Distance value.

After treatment, a 3.7% increase (26.1 meters) from the mean baseline 7570 meters was observed. The relative standard deviation at baseline was 25.2%. The observed change was 0.0136786 times the standard deviation.

A common rule of thumb considers a change greater than twice the baseline standard deviation on two separate pre-post experiments may be considered significant. This occurrence would have only a 5% likelihood of resulting from random fluctuation (a p-value < 0.05).

Data Sources

Data Sources

Productivity data was primarily collected using QuantiModo. QuantiModo allows you to easily track mood, symptoms, or any outcome you want to optimize in a fraction of a second. You can also import your data from over 30 other apps and devices. QuantiModo then analyzes your data to identify which hidden factors are most likely to be influencing your mood or symptoms.

Walk Or Run Distance data was primarily collected using Fitbit. Fitbit makes activity tracking easy and automatic.

Limitations

Limitations

As with any human experiment, it was impossible to control for all potentially confounding variables. Correlation does not necessarily imply causation. We can never know for sure if one factor is definitely the cause of an outcome. However, lack of correlation definitely implies the lack of a causal relationship. Hence, we can with great confidence rule out non-existent relationships. For instance, if we discover no relationship between mood and an antidepressant this information is just as or even more valuable than the discovery that there is a relationship.

We can also take advantage of several characteristics of time series data from many subjects to infer the likelihood of a causal relationship if we do find a correlational relationship. The criteria for causation are a group of minimal conditions necessary to provide adequate evidence of a causal relationship between an incidence and a possible consequence.

Criteria For Causal Inference

Strength (A.K.A. Effect Size)

A small association does not mean that there is not a causal effect, though the larger the association, the more likely that it is causal. There is a very weakly negative (R = -0.073) relationship between Productivity and Walk Or Run Distance.

Consistency (A.K.A. Reproducibility)

Consistent findings observed by different persons in different places with different samples strengthens the likelihood of an effect. Furthermore, in accordance with the law of large numbers (LLN), the predictive power and accuracy of these results will continually grow over time. 14 paired data points were used in this analysis. Assuming that the relationship is merely coincidental, as the participant independently modifies their Productivity values, the observed strength of the relationship will decline until it is below the threshold of significance. To it another way, in the case that we do find a spurious correlation, suggesting that banana intake improves mood for instance, one will likely increase their banana intake. Due to the fact that this correlation is spurious, it is unlikely that you will see a continued and persistent corresponding increase in mood. So over time, the spurious correlation will naturally dissipate.

Specificity

Causation is likely if a very specific population at a specific site and disease with no other likely explanation. The more specific an association between a factor and an effect is, the bigger the probability of a causal relationship.

Temporality

The effect has to occur after the cause (and if there is an expected delay between the cause and expected effect, then the effect must occur after that delay). The confidence in a causal relationship is bolstered by the fact that time-precedence was taken into account in all calculations.

Biological Gradient

Greater exposure should generally lead to greater incidence of the effect. However, in some cases, the mere presence of the factor can trigger the effect. In other cases, an inverse proportion is observed: greater exposure leads to lower incidence.

Plausibility

A plausible bio-chemical mechanism between cause and effect is critical. This is where human brains excel.

Based on our responses so far,

0 humans feel that there is a plausible mechanism of action for a relationship between Productivity and Walk Or Run Distance.

0 humans feel that any relationship observed between Productivity and Walk Or Run Distance is coincidental.

Coherence

Coherence between epidemiological and laboratory findings increases the likelihood of an effect. It will be very enlightening to aggregate this data with the data from other participants with similar genetic, diseasomic, environmentomic, and demographic profiles.

Experiment

All of human life can be considered a natural experiment. Occasionally, it is possible to appeal to experimental evidence.

Analogy

The effect of similar factors may be considered.

Plausibility

Plausibility

A plausible bio-chemical mechanism between cause and effect is critical. This is where human brains excel. Based on our responses so far, 0 humans feel that there is a plausible mechanism of action and 0 feel that any relationship observed between Productivity and Walk Or Run Distance is coincidental.

Relationship Statistics

Property Value
Cause Variable Name Productivity
Effect Variable Name Walk Or Run Distance
Sinn Predictive Coefficient 0.0034734341906383
Confidence Level LOW
Confidence Interval 1994.7812799358
Forward Pearson Predictive Coefficient -0.073
Critical T Value 1.761
Average Productivity Over Previous 7 days Before ABOVE Average Walk Or Run Distance 68.5 percent
Average Productivity Over Previous 7 days Before BELOW Average Walk Or Run Distance 69.5 percent
Duration of Action 7 days
Effect Size very weakly negative
Number of Paired Measurements 14
Optimal Pearson Product 0.0043444777304867
P Value 0.37315600670094
Statistical Significance 0.0317
Strength of Relationship 1994.7812799358
Study Type population
Analysis Performed At 2021-08-30
Number of Participants 1

Productivity Info

Property Value
Variable Name Productivity
Aggregation Method MEAN
Analysis Performed At 2020-10-11
Duration of Action 7 days
Kurtosis 3.9952112498871
Mean 52.846494207541 percent
Median 53.789078703704 percent
Number of Aggregate Predictors 1062
Number of Aggregate Outcomes 94
Number of Measurements 15680
Number of Measurements (including those generated by tagged, joined, or child variables) 15680
Public true
Onset Delay 0 seconds
Standard Deviation 11.744470806288
Unit Percent
User Variables 29
UPC 0
Variable Category Goals
Variable ID 1876
Variance 213.68896125444

Walk or Run Distance Info

Property Value
Variable Name Walk Or Run Distance
Aggregation Method SUM
Analysis Performed At 2020-09-11
Duration of Action 7 days
Kurtosis 18.843598392696
Maximum Allowed Value 175000 meters
Mean 3558.0042632859 meters
Median 3158.90008036 meters
Minimum Allowed Value 1 meters
Number of Aggregate Predictors 642
Number of Aggregate Outcomes 249
Number of Measurements 123085
Number of Measurements (including those generated by tagged, joined, or child variables) 87104
Public true
Onset Delay 0 seconds
Standard Deviation 2361.166855319
Unit Meters
User Variables 378
UPC 744960759935
Variable Category Physical Activity
Variable ID 1304
Variance 9674812.3231088