Table 6 Internal consistency reliability (Cronbach’s Alphas)
From: Psychometric evaluation of an electronic Asthma Symptom Diary for young children
ePASD score | Daytime Symptoms score alpha (n) | Daytime score alpha (n) | Nighttime Symptoms score alpha (n) | Nighttime score alpha (n) | Overall Symptoms score alpha (n) |
|---|---|---|---|---|---|
Day 1 | 0.66 (82) | 0.72 (65) | 0.68 (81) | 0.76 (81) | 0.80 (74) |
Day 2 | 0.78 (79) | 0.87 (64) | 0.73 (77) | 0.78 (77) | 0.80 (69) |
Day 3 | 0.78 (73) | 0.88 (56) | 0.85 (82) | 0.86 (82) | 0.88 (67) |
Day 4 | 0.85 (82) | 0.89 (68) | 0.87 (79) | 0.88 (79) | 0.91 (74) |
Day 5 | 0.83 (73) | 0.88 (66) | 0.81 (78) | 0.81 (78) | 0.83 (67) |
Day 6 | 0.81 (77) | 0.87 (68) | 0.77 (75) | 0.82 (75) | 0.89 (63) |
Day 7 | 0.68 (73) | 0.76 (60) | 0.78 (77) | 0.81 (77) | 0.80 (65) |
Day 8 | 0.79 (71) | 0.80 (55) | 0.68 (66) | 0.75 (66) | 0.81 (55) |
Day 9 | 0.68 (61) | 0.75 (48) | 0.52 (51) | 0.52 (51) | 0.65 (43) |
Day 10 | 0.68 (51) | 0.78 (41) | 0.59 (14) | 0.74 (14) | 0.83 (14) |