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. 2018 May 24;15(4):527–533. doi: 10.1111/iwj.12893

Table 2.

Association between skin tears and independent variables of age, gender, BMI, and malnutrition

Independent variable Skin tears Multiple skin tears
No Yes P No Yes P
Age, median (range; IQR) 69 (18‐99; 25) 81 (26‐99; 14) a < .001 70 (18‐99; 25) 81 (58‐98; 14) a < .001
Female, n (%) 923 (45.7%) 74 (41.8%) χ2 (1) .991; .319b 977 (45.9%) 20 (29%) χ2 (1) 7.725; .005b, c
BMI, median (range; IQR) 25.96 (9.79‐107.15; 8.87) 23.73 (12.31‐50.87; 6.94) a < .001 25.80 (9.79‐107.15; 8.86) 23.90 (15.61‐50.87; 6.95) a.006
BMI category, n (%) χ2(4) 26.299; <.001b χ2(4) 8.868; .064b
<18.5 142 (7.3%) 21 (11.9%) 155 (7.5%) 8 (11.6%)
18.5‐24.9 699 (35.8%) 83 (47.2%) 749 (36.3%) 33 (47.8%)
25‐29.9 533 (27.3%) 48 (27.3%) 563 (27.3%) 18 (26.1%)
>30 483 (24.7%) 23 (13.1%) 497 (24.1%) 9 (13.0%)
>40 97 (5.0%) 1 (0.6%) <.001 97 (4.7%) 1 (1.4%)
Nutrition status, n (%) χ2(2) 34.499; <.001b χ2(2) 22.930; <.001b
SGA A 1253 (68.3%) 78 (46.2%) 1307 (67.3%) 24 (38.7%)
SGA B 479 (26.1%) 77 (45.6%) 523 (26.9%) 33 (53.2%)
SGA C 102 (5.6%) 14 (8.3%) 111 (5.7%) 5 (8.1%)

Abbreviations: BMI, body mass index; SGA, Subjective Global Assessment; IQR, Interquartile range.

a

Mann‐Whitney U‐test.

b

Pearson χ 2 test.

c

One cell (10.0%) has expected count less than 5. The minimum expected count is 3.17.