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Table 4 Bivariable and multivariable analyses of factors associated with polypharmacy among participants

From: Polypharmacy among adults receiving outpatient care at Kitgum General Hospital, Northern Uganda

Factors

Bivariate

Multivariate

Crude OR (95% CI)

p-value

Adjusted OR (95% CI)

p-value

Age group

18–35

1

Ref

1

Ref

36–64

2.22 (1.43–3.44)

 < 0.001**

1.06 (0.53–2.12)

0.876

 ≥ 65

2.92 (1.66–5.11)

 < 0.001**

0.73 (0.27–2.00)

0.547

Gender

 Male

1

Ref

-

-

 Female

0.86 (0.57–1.30)

0.482

  

Residence

 Urban

1

Ref

-

-

 Rural

0.92 (0.62–1.35)

0.666

  

Marital status

 Single

1

Ref

-

-

 Married

1.84 (1.01–3.33)

0.046

  

 Separated

2.42 (1.08–5.46)

0.033**

  

 Widowed

6.93 (3.10–15.51)

 < 0.001**

  

Employment Status

 Employed

1

Ref

-

-

 Unemployed

1 (0.66–1.51)

0.989

  

 Student

0.64 (0.33–1.24)

0.287

  

Average monthly income

 < 120,000 UGX

1

Ref

-

-

 120,000–240,000 UGX

1.05 (0.61–1.81)

0.853

  

 > 240,000 UGX

1.32 (0.84–2.07)

0.234

  

Chronic medical condition

 No

1

Ref

1

Ref

 Yes

4.25 (2.78–6.50)

 < 0.001**

15.93 (3.10–11.34)

 < 0.001***

Hospitalization in the last 12 months

 No

1

Ref

1

Ref

 Yes

1.9 (1.21–2.99)

0.005**

1.32 (0.71–2.46)

0.387

Herbal medicine intake

 No

1

Ref

1

Ref

 Yes

0.72 (0.41–1.27)

0.260

0.36 (0.17–0.77)

0.009***

BMI

 < 18.5 (Underweight)

1

Ref

1

Ref

 18.5–24.9 (Normal weight)

1.52 (0.91–2.54)

0.108*

1.64 (0.81–3.30)

0.168

 25–29.9 (Overweight)

2.45 (1.19–5.06)

0.015**

2.48 (0.90–6.82)

0.078

 ≥ 30 (Obese)

7 (1.36–35.93)

0.020**

6.32 (0.71–56.34)

0.098

OPD Visit in the last 12 months

 1 time

1

Ref

1

Ref

 2 times

1.89 (0.94–3.79)

0.072*

2.03 (0.82–5.02)

0.123

 3 or more times

2.28 (1.22–4.27)

0.010**

1.72 (0.75–3.95)

0.200

Use of Over-the-counter drugs

 No

1

Ref

1

Ref

 Yes

6.7 (4.28–10.49)

 < 0.001**

16.7 (8.87–31.42)

 < 0.001***

Alcohol intake

 No

1

Ref

-

-

 Yes

1.41 (0.94–2.11)

0.098*

  

Smoking status

 Current smoker

1

Ref

-

-

 Ex-smoker

0.56 (0.19–1.62)

0.283

  

 Never smoked

2.68 (1.06–6.80)

0.037**

  

Cadre of prescriber

 Nurse

1

Ref

-

-

 Clinical officer

1.37 (0.50–3.74)

0.545

  

 Medical officer

1.86 (0.64–5.42)

0.253

  

 Pharmacist

2 (0.50–8.00)

0.327

  

 Specialist

3.5 (0.94–12.97)

0.361

  
  1. *Marginally significant on bivariable analysis (p ≤ 0.05 < 0.2), **significant on bivariable analysis (p < 0.05), ***significant after multivariable analysis, CI- Confidence Interval, OR- odds ratio, UGX-Currency in Uganda Shilling, the dash (-) sign in multivariable analysis means the variable was not used in the final model