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Table 3 Multilevel logistic regression analysis of associated factors of the outcome and intermediate factors (n = 8110)

From: Factors associated with utilization of maternal serum screening for Down syndrome in mainland China: a cross-sectional study

 

Model1

Model 2

Model 3

Model 4

Dependent Variables

MSS utilization or not

Knowledge about DS

Frequency of routine prenatal checkups

Attending maternal preparation classes or not

Definition

1 = yes

1 = enough

1 = more than eight

1 = yes

0 = no (ref.)

0 = limited (ref.)

0 = less than seven (ref.)

0 = no(ref.)

Accuracy

83.1 %

80.3 %

79.6 %

74.6 %

Model

OR [95 % CI]

P-value

OR [95 % CI]

P-value

OR [95 % CI]

P-value

OR [95 % CI]

P-value

Social economic situation of the sampled cities (categorical)

        

 1 = Grade I (high)

13.73[2.64–71.31]

0.002

1.68[0.48–5.89]

0.418

6.18[0.56–68.15]

0.137

2.76[0.84–9.06]

0.094

 2 = Grade II

5.06[1.12–22.81]

0.035

1.38[0.43–4.39]

0.588

5.13[0.59–44.63]

0.139

2.96[0.99–8.89]

0.053

 3 = Grade III

2.11[0.53–8.52]

0.292

1.00[0.35–2.89]

0.998

7.03[0.938–52.67]

0.058

1.73[0.63–4.73]

0.287

 4 = Grage IV (low, ref.)

        

Age groups of the respondents (categorical)

        

 1 = younger than 20 years old

0.67[0.39–1.15]

0.142

0.47[0.25–0.87]

0.017

0.43[0.26–0.71]

0.001

0.51[0.32–0.81]

0.005

 2 = 35 years or older

0.47[0.35–0.62]

0.000

0.78[0.60–1.01]

0.059

0.78[0.61–1.00]

0.048

0.94 [0.76–1.17]

0.593

 3 = from 20 to 35 years old (ref.)

        

Respondent’s residence (categorical)

        

 0 = rural area

0.69[0.58–0.81]

0.000

0.88[0.75–1.04]

0.121

0.70[0.56–0.81]

0.000

0.63[0.54–0.72]

0.000

 1 = urban area (ref.)

        

Ethnicity of the respondents (categorical)

        

 1 = Han

1.23[0.91–1.67]

0.182

0.94[0.71–1.23]

0.647

0.87[0.66–1.14]

0.303

0.96[0.74–1.23]

0.730

 2 = Minority (ref.)

        

Educational level of the respondents (categorical)

        

 1 = less than primary school

0.41[0.27–0.60]

0.000

0.19[0.13–0.28]

0.000

0.26[0.19–0.38]

0.000

0.24[0.18–0.33]

0.000

 2 = middle school

0.49[0.37–0.65]

0.000

0.36[0.28–0.46]

0.000

0.51[0.39–0.66]

0.000

0.38[0.31–0.48]

0.000

 3 = high school or equivalent

0.62[0.47–0.81]

0.000

0.59[0.47–0.74]

0.000

0.74[0.58–0.95]

0.018

0.59[0.48–0.73]

0.000

 4 = college

0.74[0.56–0.97]

0.027

0.77[0.62–0.96]

0.018

0.94[0.73–1.21]

0.623

0.72[0.58–0.89]

0.003

 5 = more than bachelors’ (ref.)

        

Occupation of the respondents (categorical)

        

 1 = unemployed

1.63[1.27–2.09]

0.000

1.14[0.92-1.42]

0.243

0.86[0.70–1.06]

0.157

1.46[1.22–1.75]

0.000

 2 = employee

1.44[1.10–1.89]

0.009

1.11[0.86-1.43]

0.420

0.90[0.71–1.14]

0.381

1.03[0.83–1.28]

0.773

 3 = peasant (ref.)

        

Migrant situation of the respondents (categorical)

        

 0 = migrant population

0.59[0.50–0.69]

0.000

1.05[0.90–1.22]

0.572

0.83[0.71–0.96]

0.015

0.58[0.50–0.66]

0.000

 1 = not migrant population (ref.)

        

Health belief - attending maternal preparation class or not (categorical)

       

 0 = not attending maternal preparation class

0.70[0.61–0.81]

0.000

0.62[0.54–0.71]

0.000

0.66[0.57–0.75]

0.000

  

 1 = attending maternal preparation class (ref.)

        

Health insurance coverage situation of the respondents (categorical)

       

 0 = uninsured

0.92[0.79–1.07]

0.271

0.84[0.73–0.97]

0.020

0.88[0.76–1.02]

0.081

  

 1 = insured (ref.)

        

Income per person, per month in a family (yuan) (categorical)

       

 1 = from 0 to 1200

0.86[0.70–1.05]

0.147

1.00[0.82–1.21]

0.969

0.52[0.43–0.63]

0.000

  

 2 = from 1200.01–2400

0.95[0.80–1.14]

0.609

1.05[0.89–1.25]

0.560

0.70[0.59–0.83]

0.000

  

 3 = 2400.01 and above (ref.)

        

Self-evaluation of health information accessibility (categorical)

       

 1 = very easy

0.80[0.24–2.63]

0.710

3.28[0.65–16.59]

0.152

3.71[0.80–17.15]

0.093

  

 2 = not too difficult

0.70[0.22–2.30]

0.561

3.16[0.63–15.88]

0.164

3.07[0.67–14.11]

0.149

  

 3 = somewhat difficult

0.60[0.18–1.97]

0.402

1.77[0.35–8.93]

0.492

2.02[0.44–9.31]

0.366

  

 4 = quite difficult

0.52[0.14–1.87]

0.315

2.09[0.38–11.41]

0.393

1.13[0.23–5.65]

0.885

  

 5 = very much difficult

        

Levels of health care institutions where the respondents found (categorical)

       

 0 = other health centers

0.47[0.12–1.88]

0.285

1.45[0.40–5.26]

0.576

0.93[0.29–3.00]

0.903

  

 1 = primary health centers

0.38[0.19–0.76]

0.006

1.01[0.52–1.96]

0.976

0.65[0.36–1.17]

0.152

  

 2 = secondary health centers

0.57[0.33–0.96]

0.035

1.08[0.65–1.79]

0.766

0.73[0.47–1.13]

0.158

  

 3 = tertiary health centers(ref.)

        

Types of health care institutions where the respondents found(categorical)

       

 0 = other health centers

0.46[0.08–2.56]

0.377

1.35[0.25–7.17]

0.727

3.74[0.77–18.08]

0.101

  

 1 = general hospitals

0.22[0.05–1.02]

0.052

0.10[0.23–4.42]

0.997

3.24[0.78–13.54]

0.107

  

 2 = maternal and child health centers

0.38 [0.08–1.88]

0.235

1.59[0.34–7.38]

0.557

4.29[0.99–18.60]

0.052

  

 3 = community health center or township health centers (ref.)

        

Self-evaluation of health during pregnancy of the respondents (categorical)

       

 1 = very good

0.39[0.04–3.43]

0.392

0.30[0.04–2.50]

0.268

2.43[0.20–30.10]

0.490

  

 2 = good

0.41[0.46–3.67]

0.426

0.26[0.03–2.17]

0.215

2.05[0.17–25.35]

0.577

  

 3 = general

0.40[0.04–3.53]

0.407

0.25[0.03–2.03]

0.193

2.11[0.17–26.21]

0.561

  

 4 = bad

0.29[0.03–2.77]

0.283

0.33[0.04–2.88]

0.313

2.20[0.17–29.90]

0.548

  

 5 = very bad (ref.)

        

Frequency of routine prenatal checkups (categorical)

        

 0 = less than 7

0.40[0.34–0.46]

0.000

0.66[0.57–0.77]

0.000

    

 1 = more than 8 (ref.)

        

Knowledge of DS (categorical)

        

 0 = limited

0.46[0.39–0.54]

0.000

      

 1 = enough (ref.)

        
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