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Table 2 Quality of sampling methodology for 77 surveys conducted in Yemen from 2011 to 2019

From: “Strengthening data quality and reporting from small-scale surveys in humanitarian settings: a case study from Yemen, 2011–2019”

  Pre-Conflict Conflict Total
n(%)
31 (100)
n(%)
46 (100)
N(%)
77 (100)
Sampling methodology
 PPS for selection of cluster 31 (100) 46 (100) 77 (100)
 Number of clusters ≥30 31 (100) 46 (100) 77 (100)
 Non-use of mod. EPI for selecting HH a 1 (3.2) 27 (58.7) 28 (36.4)
 All HH surveyed for U5DR b 31 (100) 36 (78.3) 67 (87.0)
 Sampling methodology criteria met 1 (3.2) 17 (37.0) 18 (23.4)
  1. a Non-use of modified EPI for selecting Household. For surveys that used modified EPI for selection household (pre-conflict n = 30(96.8%), conflict, n = 19(41.3%); overall, n = 49(63.6%)) b Of the 67 surveys 34 (50.7%) — pre-conflict n = 14 and conflict n = 14 — reported appointment for revisit in the absence of members of the family or children