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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: J Am Acad Dermatol. 2014 Jun 2;71(4):623–632. doi: 10.1016/j.jaad.2014.04.063

Table II.

Patient-reported outcomes in patients with plaque psoriasis versus palmoplantar psoriasis.

Plaque psoriasis
(N=1153)
Palmoplantar
Psoriasis (N=66)
P-value

DLQI

DLQI, median (IQR) 3 (1, 6) 4 (1, 9) 0.037 a

DLQI category, N (%) 0.004 b
 0-5 No-small effect 839 (73.5) 37 (56.1)
 6-30 Moderate-extremely large effect 302 (26.5) 29 (43.9)

EQ-5D

EQ-5D index (U.S.)
median (IQR)
0.84 (0.80, 1.0) 0.83 (0.75, 1.0) 0.022 a

EQ-5D Mobility c, N (%) 0.027 b
 No problems 918 (79.8) 44 (67.7)
 Problems 232 (20.2) 21 (32.3)

EQ-5D Self-care c, N (%) 0.019 b
 No problems 1094 (95.0) 57 (87.7)
 Problems 57 (5.0) 8 (12.3)

EQ-5D Usual Activities c, N (%) <0.001 b
 No problems 949 (82.5) 40 (61.5)
 Problems 201 (17.5) 25 (38.5)

EQ-5D Pain/Discomfort c, N (%) 0.053 b
 No problems 659 (57.3) 29 (44.6)
 Problems 492 (42.7) 36 (55.4)

EQ-5D Anxiety/Depression c, N (%) 0.21 b
 No problems 817 (71) 41 (63.1)
 Problems 334 (29) 24 (36.9)

EQ-5D VAS score
 Mean (SD) 78.1 (18.3) 74.3 (19.3) 0.098 d
 Median (IQR) 80 (70, 90) 80 (70, 90) 0.072 a

Topical prescription use in the last week

Median number of days used (IQR) 3 (0, 7) 7 (1, 7) 0.001 a

Number of patients who reported no use, N
(%)
416 (36.1) 15 (22.7) 0.033 b

Number of patients who reported heavy use
(daily use with ≥ 2 applications
per day), N (%)
158 (13.7) 23 (34.9) <0.001 b

Significant values with P < 0.05 are shown in bold.

a

Wilcoxon rank-sum test

b

Fisher’s exact

c

Of the three possible responses for each EQ-5D dimension (no problems/some or moderate problems/severe problems), we combined responses to the moderate and severe categories to form two levels: no problems and problems.

d

Student’s t-test