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Table 1 Uni-factorial analyses and distribution of socio-demographic factors

From: Survival analysis of 1148 women diagnosed with breast cancer in Southern Iran

Unifactorial analysis   Distribution of factors
  Hazard ratio (95%CI) p Numbers %
Area of residence    1148* 100
   Affluent 1 0.179 213 19
   Middle 1.12 (0.79–1.58)   590 51
   Deprived 1.36 (0.95–1.94)   345 30
Family income    1143 99
   Low & poor 1 0.031 426 37
   Moderate 0.88 (0.69–1.13)   669 58
   High 0.44 (0.22–0.87)   48 4
Occupation    1148 100
   Housewife 1 0.853 898 78
   Non-manual 0.92 (0.67–1.28)   199 17
   Manual 1.07 (0.63–1.80)   51 4
Education    661 57
   Illiterate 1 0.939 203 18
   Primary 1.01 (0.65–1.58)   223 19
   High school 1.15 (0.71–1.85)   148 13
   University 1.00 (0.58–1.74)   87 7
Smoking    1145 100
   Non-smoker 1 0.009 904 79
   Smoker 1.44 (1.09–1.89)   241 21
Marital status    1147 100
   Single 1 0.056 104 9
   Married 0.64 (0.44–0.93)   936 82
   Divorced & Widowed 0.77 (0.46–1.28)   107 9
Blood group    408 36
   O 1 0.739 153 13
   A 1.18 (0.71–1.95)   105 9
   B 1.32 (0.80–2.19)   100 9
   AB 1.08 (0.53–2.20)   45 4
BMI (Body Mass Index)    951 83
   <25 1 0.784 509 44
   25–30 1.10 (0.82–1.47)   317 28
   >30 1.09 (0.72–1.66)   125 11
No. of children    1143 100
   ≤ 3 1 0.218 571 50
   4–8 0.95 (0.74–1.22)   518 45
   >8 1.87 (1.18–2.96)   54 5
Age at diagnosis    1118 97
   ≤ 35 years 1 0.499 172 15
   36–49 years 0.96 (0.67–1.37)   519 45
   50–64 years 1.02 (0.69–1.50)   342 30
   ≥ 65 years 1.35 (0.82–2.22)   85 7
Age at first pregnancy    122 11
   ≤ 18 years 1 0.081 55 5
   19–25 years 0.30 (0.08–1.06)   47 4
   >25 years 0.21 (0.03–1.66)   20 2
OCP use    255 22
   ≤ 3 years 1 0.869 80 7
   >3 years 0.96 (0.59–1.57)   175 15
Ethnicity    1140 99
   Fars 1 0.821 1006 88
   Non-Fars 1.04 (0.73–1.48)   134 12
Religion    1147 100
   Islam (Shia) 1 0.931 1031 90
   Islam (Sunni) 0.93 (0.65–1.32)   110 9.5
   Others 1.23 (0-.)   6 0.05
Menarche age    938 82
   ≤ 13 years 1 0.934 561 49
   >13 years 0.99 (0.75–1.30)   377 33
History of BC in SDR    1148 100
   No 1 0.758 996 87
   Yes 0.94 (0.65–1.36)   152 13
History of BC in FDR    1148 100
   No 1 0.22 881 77
   Yes 0.83 (0.62–1.11)   267 23
Duration of breast feeding    205 18
   ≤ 3 years 1 0.175 78 7
   4–6 years 2.03 (0.96–4.29)   68 6
   >6 years 1.62 (0.71–3.69)   59 5
  1. Abbreviations: OCP = Oral Contraceptive pill, BC = Breast Cancer, FDR = First Degree Relatives, SDR = Second Degree Relatives
  2. * Total number available of 1148 subjects