Table 2

Subgroup analysis and meta-regression for the perioperative mortality rates from complicated peptic ulcer disease in Africa

Study characteristicAbsolute difference (%) (95% CI) in mortality ratesP value
Year of publication0.1 (0.005 to 0.2)0.04
UN region
 Sub-Saharan Africa2.3 (−2.4 to 7.0)0.34
 North AfricaReference
UN sub-region
 East Africa0.6 (−5.0 to 6.2)0.84
 West Africa3.1 (−1.9 to 8.1)0.22
 Central Africa−4.5 (−14.7 to 5.8)0.39
 South Africa3.4 (−2.4 to 9.2)0.26
 North AfricaReference
Study mean age (years)0.2 (−0.02 to 0.38)0.07
  • UN, United Nations.