Case Control Study
Copyright ©The Author(s) 2023.
World J Clin Cases. Sep 6, 2023; 11(25): 5870-5877
Published online Sep 6, 2023. doi: 10.12998/wjcc.v11.i25.5870
Table 1 Univariate analysis of independent variables between post-traumatic stress disorder (PTSD)-positive and PTSD-negative patients
Patient information

PTSD-positive group
PTSD-negative group
χ2/Z
P value
GenderMales11643.972a0.046
Females2154
Age (yr)58 (53.25, 61)59 (54, 62)-1.306b0.192
Marital statusUnmarried1310.213c
Married0118
Place of residenceRural11390.153a0.927
Suburban418
Urban1761
Education levelElementary school and below4210.554a0.799
Middle or high school1761
College and above1136
Monthly income≤ 3000 yuan097.537a0.024
3000-6000 yuan1471
> 6000 yuan1838
History of traumaYes6290.478a0.639
None2689
HypertensionYes10440.398a0.544
None2274
DiabetesYes7200.414a0.604
None2598
Smoking16412.486a0.15
Yes
None1677
Alcohol consumptionYes12253.605a0.067
None2093
FertilityWith children291160.065c
Without children32
Use of sedativesYes29980.41c
None320
Use of analgesicsYes286710.23a0.002
None451
Physical restraintYes234213.495a< 0.001
None976
Sputum suctioningYes18453.391a0.073
None1473
Use of glucocorticoidsYes3293.466a0.087
None2989
APACHE II score16.5 (13.25, 21)9 (6.75, 14)-5.38b< 0.001
Family burdenYes25674.836a0.04
None751
Family breadwinnerYes6130.243c
No26105
Planned transfersYes67218.018a< 0.001
No2646
Tracheal intubationYes24644.475a0.043
No854
Length of ICU stay147 (115.375, 205.25)67-5.366b< 0.001
(42.875, 114.25)
Table 2 Value assignment for factors potentially related to post-traumatic stress disorder
Factors
Variables
Assignment methods
Occurrence of PTSDYPTSD-negative = 0, PTSD-positive = 1
GenderX1Male = 0, Female = 1
Monthly income,X2≤ 3000 = 0, 3000 – 6000 = 1, > 6000 = 2
Use of analgesicsX3No = 0, Yes = 1
Physical restraintX4No =0, Yes= 1
APACHE II scoreX5Actual measurement value
Family burdenX6No = 0, Yes = 1
Planned transfersX7No = 0, Yes = 1
Tracheal intubationX8No = 0, Yes = 1
Length of ICU stayX9Actual measurement value