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. 2018 Feb 1;29(3):e28. doi: 10.3802/jgo.2018.29.e28

Table 2. Significant factors in univariate analysis.

Variables Hazard ratio p 95% confidence interval
Age (yr) 1.06 <0.001 1.06–1.07
Hospital stratification
Medical centers Reference
Regional hospitals 0.61 <0.001 0.54–0.68
District hospitals 0.46 <0.001 0.54–0.56
Local hospitals 0.19 <0.001 0.06–0.58
Urbanization
Highly urbanized Reference
Moderately urbanized 0.80 <0.001 0.70–0.90
Newly urbanized 0.72 <0.001 0.61–0.85
Rural areas 0.72 <0.001 0.60–0.87
Others* 0.81 0.070 0.64–1.02
Premium range (NTD/month)
>15,840 and ≤25,000 Reference
≤15,840 1.25 <0.001 1.08–1.44
>25,000 1.23 <0.001 1.10–1.38
Comorbidity
Congestive heart failure 2.46 <0.001 1.50–4.03
Cerebrovascular diseases 1.79 <0.001 1.27–2.52
Peptic ulcer disease 1.83 <0.001 1.41–2.38
Mild liver disease 1.89 0.030 1.07–3.34
Diabetes 1.99 <0.001 1.60–2.47
Renal disease 2.87 <0.001 1.80–4.57
Stroke 1.79 <0.001 1.27–2.52
Depression 1.86 <0.001 1.35–2.56
Hypertension 2.05 <0.001 1.74–2.41
Pelvic inflammation 1.85 <0.001 1.58–2.17
Childbearing 0.33 <0.001 0.25–0.44

NTD, New Taiwan Dollar.

*Others includes areas with aged population, agricultural towns and cities, and remote areas.