# Table 3 Factors related to patient characteristics

n Mean (SD) or % univariate multivariate
D ND D ND P* OR (CI) OR (CI)
age in years (mean, SD) 155 368 65.0 (16.4) 63.7 (14.6) 0.36 1.01 (0.99 to 1.02)
age more than 65 91/155 202/368 55% 59% 0.24 1.17 (0.80 to 1.71)
gender masculine 90/155 220/368 58% 60% 0.40 0.93 (0.64 to 1.36)
living single at home 45/114 38/68 56% 40% 0.02 1.94 (1.06 to 3.57)
units of alcohol per day 58 172 3.2 (5.2) 2.1 (3.9) 0.09 1.05 (0.99 to 1.12)
daily use of alcohol 44/142 94/354 31% 27% 0.19 1.24 (0.81 to 1.90)
daily use of more than three units of alcohol 21/58 32/172 36% 19% 0.01 2.48 (1.29 to 4.80) 3.23 (1.30 to 7.98)
number of cigarettes per day 46 175 11.4 (13.6) 6.4 (9.6) 0.02 1.04 (1.01 to 1.07)
daily smoking 33/153 98/366 22% 27% 0.13 0.75 (0.48 to 1.18)
daily smoking of more than 10 cigarettes 22/46 54/174 48% 31% 0.03 2.04 (1.05 to 3.95)
1. Continuous variables are presented in number, mean and standard deviation (SD); categorical variables are presented in number per group and percentage.
2. * P value of difference in groups, calculated with independent samples t-test for continuous variables, with Chi squared for categorical variables.
3. CI = confidence interval; D = delirium group; ND = non-delirium group; OR = odds ratio.