Higher GERD/Acid Reflux Predicts Slightly Lower Back Pain for Population
Contents
Mike Sinn
PRINCIPAL INVESTIGATOR
Mike Sinn

Variables

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GERD/Acid Reflux 21
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Back Pain 1303

Categories

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Symptoms 13336
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Symptoms 13336

Actions

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Your Data

Tags

Low Confidence
Weak Effect Size
Negative Relationship
Population Study
cause image gauge image effect image
Participants reported a 39.2% average decrease in Back Pain following above average GERD/Acid Reflux.
Abstract

Abstract

Back Pain was generally 0.8% higher than average after 2 out of 5 of GERD/Acid Reflux per 24 hours.

Aggregated data from 1 study participants suggests with a LOW degree of confidence (p=0.399, 95% CI -1.546 to 0.984) that GERD/Acid Reflux has a weakly negative predictive relationship (R=-0.281) with Back Pain.

The highest quartile of Back Pain measurements were observed following an average 1.42 out of 5 GERD/Acid Reflux.

The lowest quartile of Back Pain measurements were observed following an average 1.83 out of 5 of GERD/Acid Reflux.

After an onset delay of 0 seconds, Back Pain is typically 0% lower than average over the 24 hours following around 1.83 out of 5 GERD/Acid Reflux.

Objective

Objective

The objective of this study is to determine the nature of the relationship (if any) between GERD/Acid Reflux and Back Pain. Additionally, we attempt to determine the GERD/Acid Reflux values most likely to produce optimal Back Pain values.
Participant Instructions

Participant Instructions

Manual Recording Option

A Create a reminder for GERD/Acid Reflux here and record it daily by enabling notifications or using A the reminder inbox here .


Manual Recording Option

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

GERD/Acid Reflux Pre-Processing

GERD/Acid Reflux measurement values below 1 out of 5 were assumed erroneous and removed. GERD/Acid Reflux measurement values above 5 out of 5 were assumed erroneous and removed. No missing data filling value was defined for GERD/Acid Reflux so any gaps in data were just not analyzed instead of assuming zero values for those times.

Back Pain Pre-Processing

Back Pain measurement values below 1 out of 5 were assumed erroneous and removed. Back Pain measurement values above 5 out of 5 were assumed erroneous and removed. No missing data filling value was defined for Back Pain 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 GERD/Acid Reflux would produce an observable change in Back Pain.

It was assumed that GERD/Acid Reflux could produce an observable change in Back Pain for as much as 24 hours 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 Back Pain is not statistically significant at a 95% confidence interval. This suggests that the GERD/Acid Reflux value does not have a significant influence on the Back Pain value.

After treatment, a 39.2% decrease (0.0166 out of 5) from the mean baseline 1.97 out of 5 was observed. The relative standard deviation at baseline was 28%. The observed change was 0.030261 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

GERD/Acid Reflux 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.

Back Pain 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.

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 weakly negative (R = -0.281) relationship between GERD/Acid Reflux and Back Pain.

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. 7 paired data points were used in this analysis. Assuming that the relationship is merely coincidental, as the participant independently modifies their GERD/Acid Reflux 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 GERD/Acid Reflux and Back Pain.

0 humans feel that any relationship observed between GERD/Acid Reflux and Back Pain 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 GERD/Acid Reflux and Back Pain is coincidental.

Relationship Statistics

Property Value
Cause Variable Name GERD/Acid Reflux
Effect Variable Name Back Pain
Sinn Predictive Coefficient 0.026740684420158
Confidence Level LOW
Confidence Interval 1.2653
Forward Pearson Predictive Coefficient -0.281
Critical T Value 1.895
Average GERD/ Acid Reflux Over Previous 24 hours Before ABOVE Average Back Pain 1.42 out of 5
Average GERD/ Acid Reflux Over Previous 24 hours Before BELOW Average Back Pain 1.83 out of 5
Duration of Action 24 hours
Effect Size weakly negative
Number of Paired Measurements 7
Optimal Pearson Product 0.19273202048552
P Value 0.39882
Statistical Significance 0.0098
Strength of Relationship 1.2653
Study Type population
Analysis Performed At 2021-08-30
Number of Participants 1

GERD/Acid Reflux Info

Property Value
Variable Name GERD/Acid Reflux
Aggregation Method MEAN
Analysis Performed At 2020-10-09
Duration of Action 24 hours
Kurtosis 1.120442884148
Maximum Allowed Value 5 out of 5
Mean 1.4762 out of 5
Median 1 out of 5
Minimum Allowed Value 1 out of 5
Number of Aggregate Predictors 14
Number of Aggregate Outcomes 7
Number of Measurements 11
Number of Measurements (including those generated by tagged, joined, or child variables) 11
Public true
Onset Delay 0 seconds
Standard Deviation 0.60421797811664
Unit 1 to 5 Rating
User Variables 1
UPC 0
Variable Category Symptoms
Variable ID 89043
Variance 0.36507936507937

Back Pain Info

Property Value
Variable Name Back Pain
Aggregation Method MEAN
Analysis Performed At 2020-09-23
Duration of Action 24 hours
Kurtosis 2.4506730088922
Maximum Allowed Value 5 out of 5
Mean 2.9034218408496 out of 5
Median 2.8847373287671 out of 5
Minimum Allowed Value 1 out of 5
Number of Aggregate Predictors 1136
Number of Aggregate Outcomes 167
Number of Measurements 3710
Number of Measurements (including those generated by tagged, joined, or child variables) 2918
Public true
Onset Delay 0 seconds
Standard Deviation 0.36868577891095
Unit 1 to 5 Rating
User Variables 405
UPC 711583981326
Variable Category Symptoms
Variable ID 1919
Variance 0.37862284909721