A Systems View Across Time and Space
 | Self-employed | Micro | Small | Medium + large | P value |
---|---|---|---|---|---|
Number | 98 | 157 | 71 | 11 | Â |
Median (IQ range) | |||||
 ENTV | 455000 (1002500) | 2000000 (5015000) | 11000,000 (22800000) | 600000000 (1450188407.5) | 0.001 |
 NPSV | 0 (0) | 0 (0) | 0 (3032000) | 0 (104500000) | 0.035 |
 NPM | 0 (0) | 0 (0) | 0 (0) | 0 (52500000) | 0.001 |
 NMKV | 0 (0) | – | 0 (0) | 0 (11500000) | 0.002 |