Table 8

Constipation symptoms. Population standardised prevalence rates (with 95% confidence intervals (CI)) and rate ratios (with 95% CI) for 2nd to 5th quintiles of socioeconomic class relative to 1st quintile

MalesFemales
Standardised prevalence rate (95% CI)Rate ratio
(95% CI)
Standardised prevalence rate
(95% CI)
Rate ratio
(95% CI)
1st quintile2.81 (1.17–4.45)8.53 (5.82–11.25)
2nd quintile4.03 (2.44–5.62)1.43 (0.73–2.14)14.06 (11.30–16.81)1.65 (1.28–2.02)
3rd quintile6.99 (4.73–9.24)2.49 (1.82–3.15)13.35 (10.78–15.92)1.57 (1.19–1.94)
4th quintile5.68 (4.01–7.35)2.02 (1.37–2.67)13.95 (11.82–16.07)1.64 (1.28–1.99)
5th quintile5.15 (3.39–6.91)1.83 (1.16–2.51)14.31 (11.73–16.89)1.68 (1.31–2.04)
  • 5th quintile is the most disadvantaged socioeconomic class.

  • Constipation symptoms: any of the following symptoms if reported to occur often or very often: <3 bowel movements each week, lumpy or hard stools, or anal blockage.