SIP Overall | SGRQ Total | FEV1 | |||
Outcome measure | correlation | Outcome measure | correlation | Outcome measure | Correlation |
P a,O2 | ns | P a,CO2 | ns | HADS anxiety | ns |
P a,CO2 | ns | SIP Work | ns | SIP emotional behaviour | ns |
HADS anxiety | 0.28* | P a,O2 | ns | SIP work | ns |
SGRQ symptoms | 0.31** | SIP alertness behavior | 0.28* | SIP alertness behaviour | ns |
FEV1 | 0.32** | SIP communication | 0.31** | HADs depression | ns |
TLCO | 0.35** | HADS anxiety | 0.36** | SGRQ symptoms | ns |
VC | 0.50*** | TLCO | 0.37** | MACL | ns |
MACL | 0.52*** | FEV1 | 0.42*** | SIP psychosocial dimension | ns |
HADS depression | 0.57*** | VC | 0.44*** | SIP sleep and rest | ns |
6MWD | 0.62*** | SIP recreation/pastimes | 0.46*** | SIP body care/movement | Ns |
SGRQ activity | 0.64*** | SIP emotional behavior | 0.49*** | SIP communication | ns |
SGRQ impacts | 0.69*** | SIP body care/movement | 0.49*** | SIP social interaction | ns |
SGRQ total | 0.69*** | SIP eating | 0.51*** | SIP mobility | 0.25* |
SIP social interaction | 0.54*** | SIP overall | 0.32** | ||
MACL | 0.54*** | SIP physical dimension | 0.34** | ||
SIP psychosocial dimension | 0.56*** | P a,O2 | 0.39** | ||
SIP home management | 0.58*** | SGRQ impacts | 0.40*** | ||
HAD depression | 0.59*** | SIP recreation/pastimes | 0.41*** | ||
SIP ambulation | 0.60*** | SGRQ total | 0.42*** | ||
6MWD | 0.61*** | SIP eating | 0.42*** | ||
SIP mobility | 0.61*** | 6MWD | 0.45*** | ||
SIP sleep and rest | 0.62*** | SIP home management | 0.46*** | ||
SIP physical dimension | 0.64*** | SIP ambulation | 0.49*** | ||
SIP overall | 0.69*** | SGRQ activity | 0.49*** | ||
TLCO | 0.52*** | ||||
P a,CO2 | 0.56*** | ||||
VC | 0.71*** |
Intra-scale correlations are not presented
ns: nonsignificant
*p<0.05
**p<0.01
***p<0.001
No consideration has been taken to direction of correlations
Pa,O2: oxygen tension in arterial blood
Pa,CO2: carbon dioxide tension arterial blood
HADS: Hospital Anxiety and Depression Scale
TLCO: carbon monoxide transfer factor
VC: vital capacity
MACL: Mood Adjective Check List
6MWD: 6-min walking distance