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Table 4 Results from multiple linear regression analysis of change in HRQoL from baseline to 6-month follow-up (adjusted for value of each scale at baseline; β is the regression coefficient)

From: Risk factors for poor health-related quality of life in patients with colon cancer include stoma and smoking habits

Scale

Global health status (QL2)

Physical function (PF2)

Role function (RF2)

β (95% CI)

P

β (95% CI)

P

β (95% CI)

P

Male sex

0.54 (− 4.60, 5.68)

0.836

2.84 (− 1.35, 7.04)

0.183

1.33 (− 5.64, 8.30)

0.707

Age (years)

0.08 (− 0.20, 0.36)

0.576

0.08 (− 0.15, 0.31)

0.491

0.19 (− 0.20, 0.57)

0.339

Smoker

− 6.24 (− 15.3, 2.77

0.174

− 6.57 (− 13.8, 0.66)

0.075

− 18.0 (− 30.2, − 5.77)

0.004

BMI (kg/m2)

− 0.34 (− 0.94, 0.26)

0.261

− 0.53 (− 1.02, − 0.05)

0.032

− 0.73 (− 1.55, 0.10)

0.085

ASA 1–2

5.58 (− 0.27, 11.4)

0.062

0.88 (− 4.08, 5.84)

0.727

0.62 (− 7.35, 8.60)

0.878

Emergency

0.40 (− 7.85, 8.65)

0.924

− 0.35 (− 6.96, 6.25)

0.917

8.20 (− 3.14, 19.5)

0.156

TNM I–III

1.61 (− 7.29, 10.5)

0.722

− 0.28 (− 7.53, 6.97)

0.939

0.89 (− 11.5, 13.2)

0.888

Stoma w/ resection

6.37 (− 0.51, 13.3)

0.069

− 0.04 (− 5.46, 5.39)

0.990

2.45 (− 6.74, 11.6)

0.600

Stoma w/o resection

− 7.75 (− 30.49, 14.99)

0.503

3.94 (− 13.96, 21.83)

0.665

− 9.48 (− 43.0, 24.1)

0.578

Scale

Emotional function (EF)

Cognitive function (CF)

Social function (SF)

β (95% CI)

P

β (95% CI)

P

β (95% CI)

P

Male sex

2.22 (− 2.74, 7.17)

0.379

1.23 (− 3.64, 6.09)

0.620

− 1.44 (− 7.69, 4.82)

0.651

Age (years)

0.31 (0.03, 0.58)

0.029

0.12 (− 0.15, 0.38)

0.378

0.35 (0.001, 0.69)

0.049

Smoker

− 9.05 (− 17.6, − 0.45)

0.039

− 7.30 (− 15.8, 1.18)

0.091

− 13.9 (− 24.9, − 2.93)

0.013

BMI (kg/m2)

− 0.22 (− 0.79, 0.35)

0.457

− 0.57 (− 1.13, − 0.003)

0.049

− 0.45 (− 1.18, 0.28)

0.228

ASA 1–2

4.37 (− 1.17, 9.91)

0.122

− 1.53 (− 7.01, 3.95)

0.583

2.05 (− 5.02, 9.13)

0.568

Emergency

− 3.77 (− 11.6, 4.02)

0.342

1.02 (− 6.63, 8.66)

0.794

− 2.47 (− 12.5, 7.51)

0.626

TNM I–III

− 3.85 (− 12.3, 4.65)

0.373

1.64 (− 6.77, 10.04)

0.702

− 2.92 (− 13.8, 7.93)

0.597

Stoma w/ resection

− 0.15 (− 6.71, 6.40)

0.963

− 3.63 (− 10.0, 2.75)

0.264

− 3.46 (− 11.8, 4.84)

0.413

Stoma w/o resection

− 7.69 (− 29.07, 13.70)

0.480

− 19.6 (− 40.4, 1.27)

0.066

− 21.5 (− 51.7, 8.79)

0.163

Scale

Fatigue (FA)

Nausea/vomiting (NV)

Pain (PA)

β (95% CI)

P

β (95% CI)

P

β (95% CI)

P

Male sex

− 2.01 (− 7.57, 3.56)

0.478

− 0.98 (− 4.26, 2.31)

0.559

− 5.24 (− 11.2, 0.76)

0.087

Age (years)

− 0.30 (− 0.61, 0.00)

0.052

− 0.21 (− 0.39, − 0.03)

0.024

0.16 (− 0.17, 0.49)

0.348

Smoker

10.8 (0.99, 20.7)

0.031

7.47 (1.77, 13.2)

0.010

10.4 (− 0.12, 20.93)

0.053

BMI (kg/m2)

0.23 (0.41, 0.88)

0.478

0.52 (0.14, 0.90)

0.007

0.80 (0.10, 1.50)

0.025

ASA 1–2

− 5.90 (− 12.2, 0.43)

0.068

− 0.16 (− 3.84, 3.52)

0.932

− 1.99 (− 8.77, 4.79)

0.564

Emergency

− 9.61 (− 18.4, − 0.78)

0.033

1.52 (− 3.69, 6.74)

0.566

− 8.02 (− 17.5, 1.45)

0.097

TNM I–III

− 8.63 (− 18.3, 1.06)

0.081

− 1.72 (− 7.37, 3.94)

0.551

7.64 (− 2.74, 18.01)

0.148

Stoma w/ resection

− 0.25 (− 7.68, 7.17)

0.947

0.57 (− 3.75, 4.89)

0.795

0.04 (− 7.89, 7.98)

0.992

Stoma w/o resection

− 1.01 (− 25.2, 23.2)

0.935

22.5 (8.09, 39.9)

0.002

36.6 (10.6, 62.6)

0.006

Scale

Dyspnoea (DY)

Insomnia (SL)

Appetite loss (AP)

β (95% CI)

P

β (95% CI)

P

β (95% CI)

P

Male sex

3.81 (− 2.05, 9.66)

0.202

− 12.3 (− 18.8, − 5.82)

< 0.001

− 4.14 (− 10.1, 1.82)

0.173

Age (years)

− 0.22 (− 0.54, 0.10)

0.180

− 0.25 (− 0.60, 0.11)

0.172

− 0.41 (− 0.73, − 0.08)

0.014

Smoker

1.64 (− 8.79, 12.1)

0.757

9.16 (− 2.22, 20.5)

0.114

5.35 (− 4.99, 15.70)

0.309

BMI (kg/m2)

0.63 (− 0.08, 1.33)

0.080

0.64 (− 0.12, 1.39)

0.099

0.23 (− 0.46, 0.91)

0.519

ASA 1–2

− 6.68 (− 13.6, 0.22)

0.058

− 1.63 (− 8.99, 5.74)

0.664

− 3.19 (− 9.88, 3.50)

0.349

Emergency

5.56 (− 3.78, 14.9)

0.242

− 3.58 (− 13.8, 6.69)

0.493

− 2.00 (− 11.4, 7.37)

0.674

TNM I–III

− 5.43 (− 15.5, 4.68)

0.291

4.78 (− 6.49, 16.05)

0.404

6.22 (− 3.99, 16.4)

0.231

Stoma w/ resection

− 5.22 (− 13.03, 2.58)

0.189

0.262 (− 8.30, 8.83)

0.952

− 6.01 (− 13.9, 1.92)

0.137

Stoma w/o resection

− 1.18 (− 26.2, 23.8)

0.926

− 9.11 (− 37.4, 19.1)

0.526

15.4 (− 10.6, 41.3)

0.246

Scale

Constipation (CO)

Diarrhoea (DI)

Financial difficulties (FI)

β (95% CI)

P

β (95% CI)

P

β (95% CI)

P

Male sex

− 2.68 (− 7.53, 2.17)

0.277

− 4.40 (− 10.6, 1.81)

0.164

− 0.73 (− 5.30, 3.85)

0.755

Age (years)

− 0.25 (− 0.51, 0.13)

0.062

− 0.49 (− 0.83, − 0.15)

0.005

− 0.15 (− 0.41, 0.10)

0.233

Smoker

1.99 (− 6.48, 10.5)

0.643

14.2 (3.32, 25.1)

0.011

8.57 (0.43, 16.7)

0.039

BMI (kg/m2)

− 0.03 (− 0.59, 0.53)

0.922

0.50 (− 0.22, 1.23)

0.173

0.58 (0.05, 1.11)

0.032

ASA 1–2

− 5.31 (− 10.8, 0.18)

0.058

− 4.09 (− 11.1, 2.91)

0.251

1.84 (− 3.32, 6.99)

0.483

Emergency

− 1.07 (− 8.88, 6.74)

0.788

0.10 (− 10.1, 10.3)

0.985

1.31 (− 6.05, 8.67)

0.727

TNM I–III

2.98 (− 5.31, 11.3)

0.480

3.33 (− 7.66, 14.3)

0.551

0.21 (− 7.66, 8.08)

0.958

Stoma w/ resection

− 8.38 (− 14.8, − 1.98)

0.010

4.11 (− 4.19, 12.2)

0.331

− 0.31 (− 6.36, 5.73)

0.919

Stoma w/o resection

16.5 (− 4.01, 37.0)

0.114

− 18.5 (− 48.1, 11.1)

0.220

20.6 (1.10, 40.0)

0.038

  1. The highest observed Variance Inflation Factor was 1.448. R2-values: QL2 0.299, PF2 0.215, RF2 0.422, EF 0.280, CF 0.239, SF 0.266, FA 0.354, NV 0.470, PA 0.419, DY 0.346, SL 0.286, AP 0.496, CO 0.596, DI 0.563, FI 0.099, Significant P values are given in bold
  2. ASA American Society of Anaesthesiologists, BMI body mass index, CI confidence interval, HRQoL health-related quality of life, TNM tumour–node–metastasis