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. 2026 Mar 17;26:192. doi: 10.1186/s12890-026-04240-z

Table 4.

Correlation Analysis Between Pulmonary Function Tests. Clinical Scores. and Thoracic CT Measurements in Male Participants

Male RV
(cm3)		 LV
(cm3)		 LLV (cm3) RLV (cm3) Total Lung VCS (mm) VCI TRANSVERS (mm) VCIAP (mm) FEV1 FEV1LT FVC FVCLT FEV1FVC FEF2575 mMRC CAT
RV (cm3) r 1 ,643** -,050 -,096 ,095 ,182 ,143 -,035 ,119 ,176 ,098 ,156 ,079 ,131 -,047 -,054
p ,000 ,696 ,452 ,576 ,151 ,261 ,783 ,483 ,296 ,564 ,355 ,644 ,439 ,783 ,749
LV (cm3) r ,643** 1 -,011 -,070 -,017 ,102 ,230 -,118 ,200 ,242 ,157 ,200 ,221 ,201 -,167 ,015
p ,000 ,930 ,581 ,918 ,421 ,068 ,353 ,236 ,148 ,355 ,236 ,189 ,233 ,323 ,928
LLV (cm3) r -,050 -,011 1 ,814** ,910** -,181 ,225 ,438** ,159 ,166 ,294 ,298 -,344* ,114 ,191 ,065
p ,696 ,930 ,000 ,000 ,152 ,074 ,000 ,347 ,327 ,078 ,073 ,037 ,502 ,258 ,702
RLV (cm3) r -,096 -,070 ,814** 1 ,905** -,207 ,040 ,252* -,036 -,006 ,064 ,111 -,348* -,034 ,294 ,189
p ,452 ,581 ,000 ,000 ,100 ,754 ,045 ,833 ,971 ,705 ,513 ,035 ,841 ,077 ,262
Total Lung r ,095 -,017 ,910** ,905** 1 -,417* ,059 ,173 ,069 ,089 ,199 ,226 -,381* ,045 ,266 ,139
p ,576 ,918 ,000 ,000 ,010 ,729 ,305 ,684 ,601 ,238 ,178 ,020 ,792 ,111 ,411
VCS (mm) r ,182 ,102 -,181 -,207 -,417* 1 -,064 -,125 -,035 -,134 -,027 -,142 -,048 -,158 -,248 -,248
p ,151 ,421 ,152 ,100 ,010 ,616 ,323 ,838 ,430 ,875 ,403 ,779 ,351 ,138 ,138
VCI TRANSVERS (MM)mm r ,143 ,230 ,225 ,040 ,059 -,064 1 ,358** ,187 ,248 ,248 ,318 -,002 ,075 ,022 ,012
p ,261 ,068 ,074 ,754 ,729 ,616 ,004 ,268 ,139 ,139 ,056 ,991 ,661 ,897 ,942
VCIAP (mm) r -,035 -,118 ,438** ,252* ,173 -,125 ,358** 1 ,141 ,170 ,196 ,223 -,100 ,143 ,004 -,282
p ,783 ,353 ,000 ,045 ,305 ,323 ,004 ,406 ,315 ,244 ,185 ,557 ,399 ,983 ,091
FEV1 r ,119 ,200 ,159 -,036 ,069 -,035 ,187 ,141 1 ,913** ,912** ,806** ,539** ,890** -,445** -,419**
p ,483 ,236 ,347 ,833 ,684 ,838 ,268 ,406 ,000 ,000 ,000 ,001 ,000 ,006 ,010
FEV1LT r ,176 ,242 ,166 -,006 ,089 -,134 ,248 ,170 ,913** 1 ,842** ,929** ,514** ,862** -,318 -,377*
p ,296 ,148 ,327 ,971 ,601 ,430 ,139 ,315 ,000 ,000 ,000 ,001 ,000 ,055 ,021
FVC r ,098 ,157 ,294 ,064 ,199 -,027 ,248 ,196 ,912** ,842** 1 ,880** ,217 ,711** -,411* -,461**
p ,564 ,355 ,078 ,705 ,238 ,875 ,139 ,244 ,000 ,000 ,000 ,198 ,000 ,011 ,004
FVCLT r ,156 ,200 ,298 ,111 ,226 -,142 ,318 ,223 ,806** ,929** ,880** 1 ,203 ,709** -,284 -,426**
p ,355 ,236 ,073 ,513 ,178 ,403 ,056 ,185 ,000 ,000 ,000 ,228 ,000 ,088 ,009
FEV1FVC r ,079 ,221 -,344* -,348* -,381* -,048 -,002 -,100 ,539** ,514** ,217 ,203 1 ,612** -,285 -,060
p ,644 ,189 ,037 ,035 ,020 ,779 ,991 ,557 ,001 ,001 ,198 ,228 ,000 ,087 ,723
FEF2575 r ,131 ,201 ,114 -,034 ,045 -,158 ,075 ,143 ,890** ,862** ,711** ,709** ,612** 1 -,320 -,307
p ,439 ,233 ,502 ,841 ,792 ,351 ,661 ,399 ,000 ,000 ,000 ,000 ,000 ,053 ,065
mMRC r -,047 -,167 ,191 ,294 ,266 -,248 ,022 ,004 -,445** -,318 -,411* -,284 -,285 -,320 1 ,758**
p ,783 ,323 ,258 ,077 ,111 ,138 ,897 ,983 ,006 ,055 ,011 ,088 ,087 ,053 ,000
CAT r -,054 ,015 ,065 ,189 ,139 -,248 ,012 -,282 -,419** -,377* -,461** -,426** -,060 -,307 ,758** 1
p ,749 ,928 ,702 ,262 ,411 ,138 ,942 ,091 ,010 ,021 ,004 ,009 ,723 ,065 ,000

RLV Right lung volume, LLV Left lung volume, RV Right heart ventricular volume, LV Left heart ventricular volume, VCS Vena cava superior, VCI Vena cava inferior, VCIAP the maximal anteroposterior diameter of vena cava inferior, VCITRANSVERS the transvers diameter of vena cava inferior, PA Pulmonary artery, TLC Total lung capacity, FEV1 Forced Expiratory volume in 1s, FEV1LT Forced expiratory volume in 1 s (liters), FVC Forced vital capacity, FVCLT Forced vital capacity (liters), FEV1/FVC  ratio of forced expiratory volume in 1 s to forced vital capacity, FEF25-75 Forced expiratory flow at 25–75% of FVC, CAT Copd assessment test, mMRC Modified Medical Research Council Dyspnea Scalem

* Correlation is significant at the 0.05 level (2-tailed), ** Correlation is significant at the 0.01 level (2-tailed)

 *statistically significant p value (p < 0.05))