Table 2.
Mean, standard deviation, and range WCPM and WIPM scores at pre-and post-test by group.
| Group | n | Score | WCPM at pre-test | WCPM at post-test | Change in WCPM1 | WIPM at pre-test | WIPM at post-test | Change in WIPM1 |
|---|---|---|---|---|---|---|---|---|
| Experimental | 15 | Mean | 83.7 | 93.5 | 9.8a | 3.1 | 2.7 | −0.5 |
| SD | (15.2) | (13.3) | (7.4) | (2.3) | (1.5) | (2.6) | ||
| Range | 61–106 | 65–115 | 3–28 | 0–7 | 1–6 | −6–4 | ||
| Wait-list control | 8 | Mean | 90.8 | 93.0 | 2.3 | 4.0 | 4.1 | 0.1 |
| SD | (11.9) | (13.8) | (7.1) | (2.5) | (3.3) | (2.4) | ||
| Range | 73–106 | 70–108 | −9–10 | 1–8 | 0–9 | −4–4 |
1Change score refers to the change between pre-and post-test. aDenotes a statistically significant difference between the groups. WCPM, words read correctly per minute. WIPM, words read incorrectly per minute. SD, standard deviation (with scores shown in parentheses). Score ranges reflect students in third, fourth, and fifth grades, which helps to explain wider ranges for WCPM. Negative values in the last column reflect an improvement in reading during the post-test. The Experimental Group received HELPS-PB between the pre-and post-test period. Whereas the wait-list control group did not.