Table 2 Shewhart’s control rules sensitivity and PPV for predicting manic episodes within the next 4 weeks
Manic episodes | Episodes preceded by any rule activation | Rules activated | Rules followed by an episode | |||
|---|---|---|---|---|---|---|
n | n | Sensitivity% (95% CI) | n | n | PPV% (95% CI) | |
Universal X-bar charts | ||||||
Short run-in period cohort | ||||||
Original dataa | 53a | 16a | 30 (19, 45)a | 439a | 29a | 7 (5, 9)a |
LVCF imputed data | 53 | 18 | 34 (22, 48) | 755 | 47 | 6 (5, 8) |
Long run-in period cohort | ||||||
Original data | 25 | 14 | 56 (35, 75) | 548 | 22 | 4 (3, 6) |
LVCF imputed data | 25 | 15 | 60 (39, 78) | 958 | 35 | 4 (3, 5) |
Personalized X-bar charts | ||||||
Short run-in period cohort | ||||||
Original data | 53 | 15 | 28 (17, 43) | 666 | 29 | 4 (3, 6) |
LVCF imputed data | 53 | 18 | 34 (22, 48) | 1052 | 42 | 4 (3, 5) |
Long run-in period cohort | ||||||
Original data | 25 | 10 | 40 (22, 61) | 421 | 15 | 4 (2, 6) |
LVCF imputed data | 25 | 12 | 48 (28, 68) | 711 | 25 | 4 (2, 5) |
Individual-moving range charts | ||||||
Short run-in period cohort | ||||||
Original data | ||||||
Individual chart | 53 | 17 | 32 (20, 46) | 944 | 35 | 4 (3, 5) |
Moving range chart | 53 | 22 | 42 (28, 56) | 1333 | 49 | 4 (3, 5) |
LVCF imputed data | ||||||
Individual chart | 53 | 20 | 38 (25, 52) | 1415 | 49 | 3 (3, 5) |
Moving range chart | 53 | 27 | 51 (37, 65) | 2027 | 76 | 4 (3, 5) |
Long run-in period cohort | ||||||
Original data | ||||||
Individual chart | 25 | 10 | 40 (22, 61) | 635 | 23 | 4 (2, 5) |
Moving range chart | 25 | 13 | 52 (32, 72) | 1078 | 27 | 3 (2, 4) |
LVCF imputed data | ||||||
Individual chart | 25 | 11 | 44 (25, 65) | 1012 | 34 | 3 (2, 5) |
Moving range chart | 25 | 15 | 60 (39, 78) | 1697 | 44 | 3 (2, 3) |