Table 6. Statistical software published in 1990, 2000, and 2010.
| Total | Article Year 1990(n = 223) | Article Year 2000(n = 314) | Article Year 2010(n = 301) | χ 2 | P * | |
|---|---|---|---|---|---|---|
| Statistical software | ||||||
| SPSS | 256(30.5%) | 56(25.1%) | 99(31.5%) | 101(33.6%) | 4.531 | 0.104 |
| SAS | 302(36.0%) | 30(13.5%) | 131(41.7%) | 141(46.8%) | 69.993 | <0.001 |
| STATA | 75(8.9%) | 7(3.1%) | 36(11.5%) | 32(10.6%) | 12.722 | 0.002 |
| R | 30(3.6%) | 3(1.3%) | 12(3.8%) | 15(5.0%) | 4.997 | 0.082 |
| Other software | 75(8.9%) | 39(17.5%) | 26(8.3%) | 10(3.3%) | 31.824 | <0.001 |
| Not mention | 100(11.9%) | 88(39.5%) | 10(3.2%) | 2(0.7%) | 220.046 | <0.001 |
| Data Management | ||||||
| Database # | 388(46.3%) | 47(21.1%) | 132(42.0%) | 209(69.4%) | 124.156 | <0.001 |
| Excel ※ | 162(19.3%) | 55(24.7%) | 82(26.1%) | 25(8.3%) | 36.795 | <0.001 |
| Not mention | 288(34.4%) | 121(54.3%) | 100(31.8%) | 67(22.3%) | 59.571 | <0.001 |
*Chi-square test for differences on three years.
#Database includes EpiData, Oracle, Access and Others. If the article mentioned the data is input into database, then it was divided into "Others".
※Excel is not a database.