Statistiques descriptives des variables quantitatives

Data

Nous allons ici employer les données description :`

Test de Student apparié

L’évolution des moyennes de la volume lobe entre les deux périodes est de 858.87ml /equivalent à une diminution de ….% . La p-value du test est <0.05. Ainsi, les résultats nous indiquent que le volume lobe des sujets après traitement est significativement différente du volume lobe avant celui-ci, dans le sens d’une decroissance.

t.test(Av_Ap_total_HID$MMRC_0 , Av_Ap_total_HID$MMRC_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$MMRC_0 and Av_Ap_total_HID$MMRC_1
## t = 6.8597, df = 34, p-value = 6.739e-08
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  0.8645963 1.5925465
## sample estimates:
## mean of the differences 
##                1.228571
t.test(Av_Ap_total_HID$BODE_0 , Av_Ap_total_HID$BODE_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$BODE_0 and Av_Ap_total_HID$BODE_1
## t = 5.5748, df = 33, p-value = 3.38e-06
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  1.083323 2.328442
## sample estimates:
## mean of the differences 
##                1.705882
t.test(Av_Ap_total_HID$VEMS.ml_0, Av_Ap_total_HID$VEMS.ml_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$VEMS.ml_0 and Av_Ap_total_HID$VEMS.ml_1
## t = -4.1485, df = 36, p-value = 0.000195
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -241.84193  -83.02293
## sample estimates:
## mean of the differences 
##               -162.4324
t.test(Av_Ap_total_HID$Tiffe_0 , Av_Ap_total_HID$Tiffe_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$Tiffe_0 and Av_Ap_total_HID$Tiffe_1
## t = -0.45181, df = 36, p-value = 0.6541
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -3.337822  2.121606
## sample estimates:
## mean of the differences 
##              -0.6081081
t.test(Av_Ap_total_HID$CV_ml_0 , Av_Ap_total_HID$CV_ml_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$CV_ml_0 and Av_Ap_total_HID$CV_ml_1
## t = -2.7821, df = 36, p-value = 0.008545
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -394.86335  -61.89341
## sample estimates:
## mean of the differences 
##               -228.3784
t.test(Av_Ap_total_HID$CVF_ml_0 , Av_Ap_total_HID$CVF_ml_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$CVF_ml_0 and Av_Ap_total_HID$CVF_ml_1
## t = -1.4846, df = 36, p-value = 0.1464
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -473.39407   73.24326
## sample estimates:
## mean of the differences 
##               -200.0754
t.test(Av_Ap_total_HID$VR_ml_0 , Av_Ap_total_HID$VR_ml_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$VR_ml_0 and Av_Ap_total_HID$VR_ml_1
## t = 4.4621, df = 36, p-value = 7.67e-05
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  371.0352 989.3464
## sample estimates:
## mean of the differences 
##                680.1908
t.test(Av_Ap_total_HID$CPT_ml_0 , Av_Ap_total_HID$CPT_ml_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$CPT_ml_0 and Av_Ap_total_HID$CPT_ml_1
## t = 3.0293, df = 36, p-value = 0.004516
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  169.1088 854.1885
## sample estimates:
## mean of the differences 
##                511.6486
t.test(Av_Ap_total_HID$TLCO_0 , Av_Ap_total_HID$TLCO_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$TLCO_0 and Av_Ap_total_HID$TLCO_1
## t = -1.7071, df = 24, p-value = 0.1007
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -5.47827  0.51827
## sample estimates:
## mean of the differences 
##                   -2.48
t.test(Av_Ap_total_HID$P_pct._0 , Av_Ap_total_HID$Pi_pct._1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$P_pct._0 and Av_Ap_total_HID$Pi_pct._1
## t = -3.8677, df = 15, p-value = 0.001518
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -36.45049 -10.54951
## sample estimates:
## mean of the differences 
##                   -23.5
t.test(Av_Ap_total_HID$SNIP_KPA_0 , Av_Ap_total_HID$SNIP_KPA_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$SNIP_KPA_0 and Av_Ap_total_HID$SNIP_KPA_1
## t = -2.4428, df = 12, p-value = 0.031
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -1.8191564 -0.1039205
## sample estimates:
## mean of the differences 
##              -0.9615385
t.test(Av_Ap_total_HID$Ci_rest.recalc._0 , Av_Ap_total_HID$Ci_rest.recalc._1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$Ci_rest.recalc._0 and Av_Ap_total_HID$Ci_rest.recalc._1
## t = 0.18977, df = 36, p-value = 0.8506
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -149.2314  180.0422
## sample estimates:
## mean of the differences 
##                15.40541
t.test(Av_Ap_total_HID$CI_pic.recalc_0, Av_Ap_total_HID$CI_pic.recalc_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$CI_pic.recalc_0 and Av_Ap_total_HID$CI_pic.recalc_1
## t = -2.7753, df = 36, p-value = 0.008693
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -258.68117  -40.23775
## sample estimates:
## mean of the differences 
##               -149.4595
t.test(Av_Ap_total_HID$CI_diff.recalc_0 , Av_Ap_total_HID$CI_diff.recalc_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$CI_diff.recalc_0 and Av_Ap_total_HID$CI_diff.recalc_1
## t = -2.0765, df = 36, p-value = 0.04504
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -325.885142   -3.844587
## sample estimates:
## mean of the differences 
##               -164.8649
t.test(Av_Ap_total_HID$CI_isoP_0 , Av_Ap_total_HID$CI_isoP_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$CI_isoP_0 and Av_Ap_total_HID$CI_isoP_1
## t = -2.8224, df = 36, p-value = 0.007715
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -346.96715  -56.81663
## sample estimates:
## mean of the differences 
##               -201.8919
t.test(Av_Ap_total_HID$temps_sec_0 , Av_Ap_total_HID$temps_sec_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$temps_sec_0 and Av_Ap_total_HID$temps_sec_1
## t = -0.67311, df = 36, p-value = 0.5052
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -72.34321  36.28916
## sample estimates:
## mean of the differences 
##               -18.02703
t.test(Av_Ap_total_HID$VO2_max_0, Av_Ap_total_HID$VO2_max_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$VO2_max_0 and Av_Ap_total_HID$VO2_max_1
## t = -0.51057, df = 28, p-value = 0.6137
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -0.07189597  0.04320631
## sample estimates:
## mean of the differences 
##             -0.01434483
t.test(Av_Ap_total_HID$Wmax_0 , Av_Ap_total_HID$Wmax_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$Wmax_0 and Av_Ap_total_HID$Wmax_1
## t = -1.2665, df = 36, p-value = 0.2135
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -6.046277  1.397628
## sample estimates:
## mean of the differences 
##               -2.324324
t.test(Av_Ap_total_HID$VT_isotime_0 , Av_Ap_total_HID$VT_isotime_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$VT_isotime_0 and Av_Ap_total_HID$VT_isotime_1
## t = -3.0571, df = 36, p-value = 0.004197
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -261.73774  -52.96497
## sample estimates:
## mean of the differences 
##               -157.3514
t.test(Av_Ap_total_HID$vt_pic_0 , Av_Ap_total_HID$vt_pic_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$vt_pic_0 and Av_Ap_total_HID$vt_pic_1
## t = -2.2489, df = 36, p-value = 0.03073
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -173.168265   -8.939843
## sample estimates:
## mean of the differences 
##               -91.05405
t.test(Av_Ap_total_HID$VRI_isotime_0 , Av_Ap_total_HID$VRI_isotime_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$VRI_isotime_0 and Av_Ap_total_HID$VRI_isotime_1
## t = -0.95818, df = 36, p-value = 0.3444
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -138.8153   49.7342
## sample estimates:
## mean of the differences 
##               -44.54054
t.test(Av_Ap_total_HID$VO2_FC_0 , Av_Ap_total_HID$VO2_FC_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$VO2_FC_0 and Av_Ap_total_HID$VO2_FC_1
## t = 0.20866, df = 28, p-value = 0.8362
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -0.3526764  0.4326764
## sample estimates:
## mean of the differences 
##                    0.04
t.test(Av_Ap_total_HID$dist_parc_0 , Av_Ap_total_HID$dist_parc_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$dist_parc_0 and Av_Ap_total_HID$dist_parc_1
## t = -3.3286, df = 31, p-value = 0.00226
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -58.36015 -14.01485
## sample estimates:
## mean of the differences 
##                -36.1875
t.test(Av_Ap_total_HID$Nadir_sat_0 , Av_Ap_total_HID$Nadir_sat_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$Nadir_sat_0 and Av_Ap_total_HID$Nadir_sat_1
## t = -1.0556, df = 31, p-value = 0.2993
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -3.390255  1.077755
## sample estimates:
## mean of the differences 
##                -1.15625
t.test(Av_Ap_total_HID$EELV_repos._0 , Av_Ap_total_HID$EELV_repos._1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$EELV_repos._0 and Av_Ap_total_HID$EELV_repos._1
## t = 2.4431, df = 36, p-value = 0.01959
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##   84.30415 908.18234
## sample estimates:
## mean of the differences 
##                496.2432
t.test(Av_Ap_total_HID$EELV_pic._0 , Av_Ap_total_HID$EELV_pic._1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$EELV_pic._0 and Av_Ap_total_HID$EELV_pic._1
## t = 3.7176, df = 36, p-value = 0.0006813
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##   300.4457 1021.7705
## sample estimates:
## mean of the differences 
##                661.1081
t.test(Av_Ap_total_HID$EELV_isoPUISSANCE._0, Av_Ap_total_HID$EELV_isoPUISSANCE._1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$EELV_isoPUISSANCE._0 and Av_Ap_total_HID$EELV_isoPUISSANCE._1
## t = 3.8482, df = 36, p-value = 0.0004684
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##   337.4847 1089.5963
## sample estimates:
## mean of the differences 
##                713.5405
t.test(Av_Ap_total_HID$SNIP_KPA_pct_0 , Av_Ap_total_HID$SNIP_KPA_pct_1, paired=TRUE)
## 
##  Paired t-test
## 
## data:  Av_Ap_total_HID$SNIP_KPA_pct_0 and Av_Ap_total_HID$SNIP_KPA_pct_1
## t = -2.8261, df = 13, p-value = 0.0143
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -20.92113  -2.79316
## sample estimates:
## mean of the differences 
##               -11.85714