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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: J Eur Acad Dermatol Venereol. 2017 Jun 1;31(10):1674–1680. doi: 10.1111/jdv.14310

Table 1.

Baseline Demographics in THIN1

Controls Mild Psoriasis Moderate-severe Psoriasis

N 961,888 188,664 12,694

Age, mean in years (SD) 48.39 (17.15) 45.64 (17.16) 46.20 (15.10)

Female Sex, N (%) 540,005 (56.14) 97,769 (51.82) 6,153 (48.47)

Cohort time, years (SD) 10.10 (4.82) 8.33 (5.16) 9.35 (5.02)

Smoking History, N (%)
Never 443,229 (46.08) 69,791 (36.99) 4,621 (36.40)
Ever 496,096 (51.58) 114,444 (60.66) 7,949 (62.62)
Missing 22,563 (2.35) 4,429 (2.35) 124 (0.98)

Drinking History, N (%)
Never 94,976 (9.87) 16,985 (9.00) 1,210 (9.53)
Ever 762,890 (79.31) 150,053 (79.53) 10,390 (81.85)
Missing 104,022 (10.81) 21,626 (11.46) 1,094 (8.62)

Body Mass Index, Mean (SD) 27.00 (5.72) 27.26 (5.90) 28.55 (6.44)

Body Mass Index, N (%)
Underweight/Normal 345,580 (35.93) 64,804 (34.35) 3,951 (28.29)
Overweight 300,335 (31.22) 57,815 (30.64) 4,010 (31.59)
Obese 212,891 (22.13) 44,292 (23.48) 4,080 (32.14)
Missing 103,082 (10.72) 21,751 (11.53) 1,013 (7.98)

Townsend Score, N (%)
1st Quintile 241,061 (25.06) 43,677 (23.15) 3,049 (24.02)
2nd Quintile 203,781 (21.19) 38,297 (20.30) 2,659 (20.95)
3rd Quintile 192,114 (19.97) 38,274 (20.29)34,331 2,575 (20.29)
4th Quintile 168,741 (17.54) (18.20)24,721 2,235 (17.61)
5th Quintile 115,859 (12.04) (13.10)9,364 (4.96) 1,613 (12.71)
Missing 40,332 (4.19) 563 (4.44)

History of IVDU2, N (%) 133 (0.01) 45 (0.02) 4 (0.03)

History of dialysis3, N (%) 946 (0.10) 151 (0.08) 23 (0.18)

History of blood transfusion, N (%) 7,887 (0.82) 1,397 (0.74) 138 (1.09)
1

All p values are <0.001 unless otherwise reported.

2

p = 0.002

3

p = 0.001