Project:

WP 4b (only difference, threshold is 10)

Kipsausasennon vaikutus uusintarepositioriskiin: eli miten kipsauskulma vaikutta uusintarepositioiden määrään. Otetaan kaikilta ensimmäinen repositio ja katsotaan sen jälkeiset uusintarepositiot riippumatta millon ne on tehty  logistinen regressio päätemuuttujana uusintareposito(t) (kyllä/ei), kipsausasennon astekulmat selittäjänä.

Data selection

During data selection, cases that were operated upon, with no pictures available, no cast used, fractures other than wrist, or no fractures were excluded from the analyses

Threshold for changes in casting flexion and deviation degree during follow-up

Throughout the follow-up period, subjects exhibiting a difference of over 5 degrees in wrist flexion or deviation across all captured images were categorized under ‘re-casting/repositioning’ category (n = 183). Those with less than a 5-degree difference (n = 372) were classified in the ‘non-recasting/repositioning’ category.

## 
##   0   1 
## 372 183

Results

demographic data

## number of subjects: 555

## Age

## Mean: 76.7657657657658

## Standard Deviation: 3.89796520776158

## Range:

## 65 - 87

## Height

## Mean: 159.139095744681

## Standard Deviation: 5.94928237522324

## Range:

## 143 - 178

## Weight

## Mean: 66.6950777202073

## Standard Deviation: 11.5804201803037

## Range:

## 38 - 112.6

## BMI

## Mean: 26.3904955520811

## Standard Deviation: 4.32851203898082

## Range:

## 17.2635445362718 - 49.2587727528617

## number of chronic diseases

## Mean: 1.87207207207207

## Standard Deviation: 1.93388794765214

## Range:

## 0 - 8

wrist fracture and casting position at baseline

## [1] "Casting angle flexion"

## [1] "Mean: 10.8803501945525"

## [1] "Standard Deviation: 14.5712440475582"

## [1] "Range: -29.3" "Range: 52.8"

## [1] "Casting angle deviation"

## [1] "Mean: 7.61749049429658"

## [1] "Standard Deviation: 7.98807672036177"

## [1] "Range: -14.6" "Range: 36.3"

self reported diseases

## [1] "Hypertension"

## [1] "Percentage: 36.4326375711575"

## [1] "Ischaemic Heart Disease"

## [1] "Percentage: 16.3187855787476"

## [1] "Other heart disease"

## [1] "Percentage: 9.10815939278937"

## [1] "Stroke"

## [1] "Percentage: 2.46679316888046"

## [1] "High cholestrol"

## [1] "Percentage: 27.8937381404175"

## [1] "Diabetes"

## [1] "Percentage: 9.86717267552182"

## [1] "Hypothyroidism"

## [1] "Percentage: 9.67741935483871"

## [1] "Asthma"

## [1] "Percentage: 10.6261859582543"

## [1] "Alzhemiers (or other memory disorders)"

## [1] "Percentage: 2.84629981024668"

## [1] "Cancer"

## [1] "Percentage: 7.77988614800759"

## [1] "Back pain"

## [1] "Percentage: 18.595825426945"

## [1] "Osteoporosis"

## [1] "Percentage: 10.246679316888"

## [1] "Osteoarthrosis (all)"

## [1] "Percentage: 35.2941176470588"

logistic regression analyses

“The logistic regression analysis revealed a significant positive relationship between baseline wrist flexion (in cast), and the likelihood of re-repositioning/casting (flexion: OR = 1.03, 95% CI [1.02, 1.04], p < 0.001 ), indicating that in casts with higher volar flexion, the the odds of re-casting/re-positioning were higher.

NOTE:(casting angle deviation was not a significant factor, unlike the previous results where threshold was set at 5 degrees)

## [1] "LR model with baseline wrist flexion and deviation angle (in cast) as predictors and re-casting/repositioning as outcome"

## 
## Call:
## glm(formula = thre_both ~ flek_tr1 + devi_tr1, family = binomial, 
##     data = wp4_data)
## 
## Coefficients:
##              Estimate Std. Error z value Pr(>|z|)    
## (Intercept) -1.142972   0.158443  -7.214 5.44e-13 ***
## flek_tr1     0.030850   0.006825   4.520 6.19e-06 ***
## devi_tr1     0.018241   0.012029   1.516    0.129    
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## (Dispersion parameter for binomial family taken to be 1)
## 
##     Null deviance: 656.40  on 508  degrees of freedom
## Residual deviance: 631.38  on 506  degrees of freedom
##   (46 observations deleted due to missingness)
## AIC: 637.38
## 
## Number of Fisher Scoring iterations: 4

## [1] "Odds ratio and confidence intervals for the model"

## Waiting for profiling to be done...

##             Odds_Ratio     2.5 %    97.5 %
## (Intercept)  0.3188699 0.2318579 0.4318941
## flek_tr1     1.0313307 1.0178188 1.0454645
## devi_tr1     1.0184084 0.9947673 1.0429034

## [1] "Multicolinearity testing: VIF"

## flek_tr1 devi_tr1 
## 1.001338 1.001338