Text factors assessment results of PEMs used for patients with SLE
| Publication source | C and D words* | Superclass words† | ANDW‡ | ASL§ | ANS¶ | CLDC** |
| Self-designed (n=13) | 11.60±1.80 | 25.47±2.84 | 37.07±3.22 | 29.87±9.44 | 3.57±0.80 | 66.94±9.37 |
| Commercial company (n=7) | 10.81±1.84 | 24.63±1.53 | 35.44±2.67 | 31.93±3.13 | 3.16±0.31 | 67.37±5.35 |
| Overall (n=20) | 11.32±1.80 | 25.18±2.45 | 36.50±3.07 | 30.59±28.64 | 3.43±0.69 | 67.09±8.03 |
*Number of words in third and fourth grades of <Vocabulary and characters of different Hsk Levels>per hundred words.
†Number of words in the superclass grade of <Vocabulary and Characters of Different Hsk Levels>per hundred words.
‡ANDW, average number of difficult words per hundred words.
§ASL, average sentence length.
¶ANS, average number of sentences per hundred words: >10 for simple materials, 6–10 for primary materials, <6 for intermediate and difficult materials.
**CLDC, Chinese language difficulty coefficient: 20–30 for intermediate materials, >30 for difficult materials.
PEM, printed education material; SLE, systemic lupus erythematosu.