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Table 4 Prevalence of stroke (% and n/N) and its association with Family Average Income (FAI) by basic demographic variables in Nanjing, China

From: Impact of socio-economic factors on stroke prevalence among urban and rural residents in Mainland China

Variables FAI Category Stroke (% and n) Non-stroke (% and n) Unjusted Odds ratio (95%CI) Adjusted Odds ratio† (95%CI)
Age (yrs)      
   35–49      
  Lower 8 (0.19) 4119 (99.81) 1 1
  Middle 6 (0.12) 4874 (99.88) 0.94(0.39, 2.31) 0.33(0.11, 1.00)
  Higher 2 (0.05) 4203 (99.95) 0.94(0.39, 2.31) 0.08(0.02, 0.49)
   50–64      
  Lower 22 (0.70) 3120 (99.30) 1 1
  Middle 37 (1.37) 2659 (98.63) 2.37(1.24, 4.50) 0.91(0.51, 1.63)
  Higher 80 (1.94) 4035 (98.06) 3.50(1.81, 6.78) 0.99(0.56, 1.75)
   65+      
  Lower 33 (1.36) 2387 (98.64) 1 1
  Middle 64 (4.52) 1351 (95.48) 3.51(1.79, 6.89) 1.96(1.23, 3.13)
  Higher 210 (8.59) 2139 (91.41) 5.21(2.63, 10.32) 3.21(2.06, 4.99)
Gender      
   Women      
  Lower 25 (0.49) 5038 (99.51) 1 1
  Middle 43 (0.97) 4393 (99.03) 2.43(1.23, 4.79) 1.28(0.81, 2.02)
  Higher 118 (2.25) 5125 (97.75) 3.73(1.88, 7.40) 1.51(0.98, 2.33)
   Men      
  Lower 38 (0.82) 4588 (99.18) 1 1
  Middle 64 (1.41) 4491 (98.59) 2.36(1.40, 3.97) 1.59(0.92, 2.72)
  Higher 165 (3. 50) 5252 (96.50) 3.85(2.26, 6.58) 2.64(1.58, 4.40)
Area      
   Rural      
  Lower 28 (0.43) 6441 (99.57) 1 1
  Middle 8 (0.30) 2616 (99.70) 1.38(0.54, 3.48) 0.93(0.41, 2.12)
  Higher 1 (0.26) 387 (99.74) 1.23(0.16, 9.58) 0.59(0.08, 4.54)
   Urban      
  Lower 35 (1.09) 3185 (98.91) 1 1
  Middle 99 (1.55) 6268 (98.45) 2.92(1.77, 4.82) 1.58(1.06, 2.34)
  Higher 282 (2.74) 9992 (97.26) 4.64(2.82, 7.64) 2.63(1.95, 3.55)
Education (yrs)      
   0–9      
  Lower 59 (0.65) 8959 (99.35) 1 1
  Middle 90 (1.31) 6782 (98.69) 2.02(1.45, 2.80) 1.46(1.01, 2.10)
  Higher 120 (3.04) 3827 (96.96) 4.76 (3.48, 6.52) 2.01(1.39, 2.90)
   10–12      
  Lower 4 (0.62) 637 (99.38) 1 1
  Middle 15 (0.85) 1755 (99.15) 1.36(0.45, 4.12) 0.63(0.19, 2.07)
  Higher 51 (1.66) 3019 (98.34) 2.69 (0.97, 7.47) 0.65(0.21, 2.01)
   13+      
  Lower 0 (0.00) 30 (100.0) 1 1
  Middle 2 (0.57) 347 (99.43) N/A N/A
  Higher 112 (3.07) 3531 (96.93) N/A N/A
Occupation*      
   Blue collar      
  Lower 37 (0.49) 7548 (99.51) 1 1
  Middle 36 (0.65) 5502 (99.35) 1.34(0.84, 2.12) 1.33(0.80, 2.21)
  Higher 20 (0.73) 2720 (99.27) 1.50 (0.87, 2.59) 1.11(0.59, 2.07)
   Service people      
  Lower 13 (0.77) 1668 (99.23) 1 1
  Middle 10 (0.75) 1316 (99.25) 0.98(0.43, 2.23) 1.43(0.58, 3.51)
  Higher 11 (1.69) 641 (98.31) 2.20(0.98, 4.94) 3.49(1.32, 9.24)
   White collar      
  Lower 13 (3.07) 410 (96.93) 1 1
  Middle 61 (2.87) 2066 (97.13) 0.93(0.51, 1.71) 0.91(0.49, 1.70)
  Higher 252 (3.47) 7014 (96.53) 1.13(0.64, 2.00) 1.18(0.66, 2.13)
  1. n = number of participants with stroke within sub-group; N = total number of participants within sub-group.
  2. †Odds ratios adjusted for age, gender, area of residence, BMI category, smoking status, alcohol drinking, diabetes, high blood pressure, occupational and leisure-time physical activity.
  3. N/A = not applicable.
  4. *Blue collar = farmer, factory worker, forestry worker, fisher; Service people = salespeople, house worker; White collar = office worker, teacher, doctor and retired people.
  5. Lower FAI = the reference category.