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Table 2 The Construct and scoring method of the quality of life instrument QLICD-PS (V2.0)

From: Development and validation of the psoriasis scale among the system of quality of life instruments for chronic diseases QLICD-PS (V2.0)

Domain/Facets

Number of items

Min

Max

Raw score

Standardized score

Physical domain (PHD)

9

9

45

BPF + IND + EAD

(RS-9) × 100/36

Basic physical functions (BPF)

4

4

20

GPH1 + GPH2 + GPH3 + GPH4

(RS-4) × 100/16

Independence (IND)

3

3

15

GPH6 + GPH7 + GPH8

(RS-3) × 100/12

Energy and discomfort (EAD)

2

2

10

GPH5 + GPH9

(RS-2) × 100/8

Psychological domain (PSD)

11

11

55

COG + EMO + WIP

(RS-11) × 100/44

Cognition (COG)

2

2

10

GPS1 + GPS2

(RS-2) × 100/8

Emotion (EMO)

7

7

35

GPS3 + GPS4 + GPS5 + GPS6

 + GPS7 + GPS8 + GPS9

(RS-7) × 100/28

Will and personality (WIP)

2

2

10

GPS10 + GPS11

(RS-2) × 100/8

Social domain (SOD)

8

8

40

INC + SSS + SOR

(RS-8) × 100/32

Interpersonal communication (INC)

3

3

15

GSO1 + GSO2 + GSO3

(RS-3) × 100/12

Social support and security (SSS)

3

3

15

GSO4 + GSO5 + GSO6

(RS-3) × 100/12

Social role (SOR)

2

2

10

GSO7 + GSO8

(RS-2) × 100/8

Sub-total (QLICD-GM)

28

28

140

PHD + PSD + SOD

(RS-28) × 100/112

Specific domain (SPD)

13

13

65

SPS + TSE + PSI

(RS-14) × 100/52

Specific symptoms (SPS)

5

5

25

PS1 + PS5 + PS6 + PS7 + PS8

(RS-5) × 100/20

Treatment side effects (TSE)

3

3

15

PS9 + PS10 + PS11

(RS-3) × 100/12

Psychological impact (PSI)

5

5

25

PS2 + PS3 + PS4 + PS12 + PS13

(RS-5) × 100/20

Total (TOT)

41

41

205

PHD + PSD + SOD + SPD

(RS-41) × 100/164