Table 3 Reliability (PSI) and targeting (item difficulty and person ability distribution, and difficulty range) of the capacity scale by country. PSI: Person separation index; Mean (SD): Mean and standard deviation
Country (region) | Coverage | Year | Sample Size | PSI | Item Difficulty Mean (SD) | Person Ability Mean (SD) | Difficulty Range Thresholds min; max |
|---|---|---|---|---|---|---|---|
Afghanistan | National | 2019 | 14196 | 0.89 | 0.41 (1.016) | −1.69 (1.24) | − 1.79; 2.18 |
Cameroon, Adamawa | Regional | 2016 | 559 | 0.89 | 0.58 (2.01) | −2.08 (1.71) | −3.57; 3.61 |
Chile | National | 2014 | 12265 | 0.82 | 0.25 (1.28) | −1.99 (1.44) | −3.04; 2.12 |
Costa Rica | National | 2018 | 2390 | 0.83 | 0.06 (1.03) | −1.75 (1.12) | −2.41; 2.1 |
India | National (brief MDS) | 2018 | 2997 | 0.89 | 0.21 (0.68) | −0.88 (1.24) | −1.1; 1.47 |
Laos | National (brief MDS) | 2018 | 2461 | 0.89 | 0.28 (0.74) | −0.69 (1.08) | −1.16; 1.7 |
Pakistan, Balochistan | Regional | 2017 | 451 | 0.94 | 0.5 (1.27) | −1.08 (1.56) | −2.26; 3.47 |
Philippines | National | 2017 | 10246 | 0.86 | 0.45 (1.34) | −2.36 (1.42) | −3.18; 4.72 |
Sri Lanka | National | 2015 | 3000 | 0.84 | 0.21 (1.21) | −1.42 (1.35) | −2.45; 2.25 |
Tajikistan | National (brief MDS) | 2018 | 2999 | 0.83 | 0.27 (1.05) | −1.25 (1.4) | −1.63; 2.20 |