Table 1.
The means (standard deviation) of physician manpower-related variables in 130 countries, in training and validation sets
| Variables | Training Set(N = 65) | Validation Set(N = 65) | Entire Set(N = 130) |
|---|---|---|---|
| Physician density(per 10,000) | 15.2 (14.0) | 17.6 (14.8) | 16.4 (14.4) |
| Population density(per square kilometre) | 135.7 (222.4) | 137.2 (214.7) | 136.4 (217.8) |
| Proportion under age 15 years | 29.6 (12.0) | 29.3 (11.0) | 29.4 (11.5) |
| Proportion over age 60 years | 11.4 (7.4) | 10.6 (6.7) | 11.0 (7.1) |
| Life expectancy (years) | 65.5 (12.4) | 66.4 (11.8) | 65.9 (12.1) |
| Gross domestic product (GDP, per capita) | 10177 (15811) | 10091 (14279) | 10134 (15005) |
| Expenditure on health as percentage of GDP | 6.6 (2.7) | 6.6 (2.8) | 6.6 (2.8) |
| Purchasing power parities | 438 (1518) | 299 (924) | 370 (1258) |
Notes. Data are partitioned into two subsets in a cross-validation analysis. The "training set" is the subset used for analysis, and the "validation set" is used for validating the analysis