Table 5 Hazard ratios (HRs) from Cox regression models showing the effect of 5-year birth cohorts on survival time to first sex (for pooled DHS data), stratified for area of residence, region, education and wealth
Median AFS 1970–4 cohortHRs by birth cohort
1970–41975–91980–41985–91990–1
Men
All subjects (N)10021041831558230
All subjects (HR)17.710.990.880.82*0.8
Area (urban/rural)
    Urban17.110.78*0.76*0.69*0.48
    Rural17.911.040.910.850.88
Region
    Central†17.510.950.990.960.64
    Eastern17.010.970.820.63*0.43*
    Northern18.211.220.951.141.62*
    Western18.010.900.72*0.67*0.8
Education
    None17.610.870.880.39N/A
    Primary17.611.020.850.850.68
    Secondary and above18.110.970.970.841.71
Wealth ranking
    Poorest17.311.00.860.731.3
    Poor18.411.36*1.190.960.75
    Middle17.710.820.930.840.71
    Rich15.710.820.790.730.93
    Richest16.210.930.871.00.75
Year of survey
    199517.510.920.51
    200118.111.020.950.6
    200617.610.970.90.83*0.85
Women
All subjects (N)4893453234542101754
All subjects (HR)16.410.970.82***0.67***0.44***
Area (urban/rural)
    Urban16.610.940.79***0.67***0.61**
    Rural16.310.990.84***0.69***0.42***
Region
    Central†16.110.970.81***0.61***0.44***
    Eastern15.810.960.83***0.68***0.47***
    Northern16.510.970.82**0.71***0.34***
    Western17.010.960.82**0.71***0.49**
Education
    None15.910.990.980.770.41
    Primary16.211.040.81***0.7***0.42***
    Secondary and above17.910.920.940.870.91
Wealth ranking
    Poorest16.011.050.940.820.35
    Poor16.310.990.910.78**0.36***
    Middle15.111.090.83**0.6***0.45**
    Rich15.010.90.7***0.57***0.43***
    Richest17.1110.880.76**0.75
Year of survey
    199516.310.980.67
    200116.611.040.89*0.56***
    200616.210.930.8***0.65***0.42***
  • Restricted to those born on or after 1 January 1970.

  • All birth cohorts compared with those born in 1970–4.

  • *p<0.05; **p<0.01; ***p<0.001.

  • †Central region contains Masaka and Rakai districts.