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Table 2 Unadjusted (uOR) and adjusted odds ratios (aOR) and their respective 95% confidence intervals (95% CIs) for the relationship between characteristics of study population and needlestick and sharp injury (NSI) experience

From: Prevalence and associated factors for needlestick and sharp injuries (NSIs) among dental assistants in Jeddah, Saudi Arabia

Characteristic

Category

Unadjusted odds ratios

Adjusted odds ratios

uOR

95% CI

p value

aOR

95% CI

p value

Number of clinics worked

One

1.00

  

1.00

  

Two

1.47

0.78–2.77

0.2283

1.26

0.64–2.49

0.5009

3 or more

1.00

0.64–1.57

0.9943

1.00

0.61–1.62

0.9877

Daily working hours

> 8 h

1.00

  

1.00

  

8 h or less

1.60

0.97–2.64

0.0685

1.46

0.82–2.58

0.1949

Number of patients attended per day

> 12

1.00

  

1.00

  

12 or less

1.55

1.02–2.36

0.0398*

1.63

1.03–2.56

0.0358*

Years of experience

> 3 years

1.39

0.93–2.10

0.1095

1.48

0.95–2.31

0.0853

3 years or less

1.00

  

1.00

  

Performing procedures carrying high risk

No

1.00

  

1.00

  

Yes

1.14

0.74–1.74

0.5571

1.29

0.82–2.04

0.2646

Anti-hepatitis B vaccination

No

2.31

1.34–3.96

0.0024*

1.89

1.05–3.41

0.0333*

Yes

1.00

  

1.00

  

Wore gowns, mask, and gloves

No

1.60

0.95–2.69

0.0750

1.37

0.67–2.79

0.3886

Yes

1.00

  

1.00

  

Used eye and facial protection

No

1.61

0.97–2.65

0.0629

1.14

0.60–2.18

0.6834

Yes

1.00

  

1.00

  

Used protective films

No

1.20

0.69–2.10

0.5202

0.83

0.43–1.58

0.5642

Yes

1.00

  

1.00

  

Used disposable burs

No

1.37

0.91–2.06

0.1282

1.20

0.77–1.88

0.4239

Yes

1.00

  

1.00

  

Used high-volume suction

No

1.59

0.82–3.11

0.1717

1.14

0.54–2.42

0.7288

Yes

1.00

  

1.00

  

Recapped needles by one-hand technique

No

1.87

0.90–3.87

0.0938

1.59

0.69–3.62

0.2732

Yes

1.00

  

1.00

  

Knowledge of infection control procedures and disease transmission

Good

1.00

  

1.00

  

Poor

2.10

1.36–3.23

0.0007*

1.87

1.18–2.97

0.0082*

Formal infection control training

No

1.15

0.72–1.83)

0.5500

0.86

0.52–1.45

0.5778

Yes

1.00

  

1.00

  

Infection control unit in the clinic

No

2.31

1.53–3.51

< 0.0001*

2.28

1.45–3.57

0.0003*

Yes

1.00

  

1.00

  
  1. *p values reported were significant based on significance level of 0.05
  2. Reference category for the variable