Table 4.
Responsiveness of OIDP: mean OIDP in 2007 and 2012 by change scores of reference variables in Norway (n = 2947) and Sweden (n = 4862)
| Satisfaction with oral health | Worsened Mean (sd) c | Stable Mean (sd) d | Improved Mean (sd) e | Wilk’s lamda p-value |
|---|---|---|---|---|
|
Norway |
|
|
|
|
| OIDP 2007 |
9.9 (4.3) |
8.9 (3.1) |
10.8 (5.4) |
|
| OIDP 2012 |
11.5 (5.8) |
8.9 (3.2) |
9.5 (3.9) |
|
| 2007 versus 2012 |
p = 0.001a |
p = 0.792a |
p = 0.001a |
0.946 p = 0.001b |
|
Sweden |
|
|
|
|
| OIDP 2007 |
9.4 (3.9) |
9.2 (3.7) |
10.9 (5.8) |
|
| OIDP 2012 |
9.9 (4.5) |
8.8 (3.0) |
8.8 (2.9) |
|
| 2007 versus 2012 |
p = 0.001a |
p = 0.000a |
p = 0.000a |
0.952 p = 0.001b |
|
Satisfaction with tooth appearance |
Worsened Mean (sd)
c
|
Stable Mean (sd)
d
|
Improved Mean (sd)
e
|
|
|
Norway |
|
|
|
|
| OIDP 2007 |
9.7 (3.9) |
9.1 (3.4) |
10.7 (5.1) |
|
| OIDP 2012 |
11.6 (6.0) |
9.1 (3.4) |
9.3 (3.1) |
|
| 2007 versus 2012 |
p = 0.001a |
p = 0.987a |
p = 0.001a |
0.935 p = 0.001b |
|
Sweden |
|
|
|
|
| OIDP 2007 |
9.2 (3.5) |
9.2 (3.6) |
10.8 (5.6) |
|
| OIDP 2012 |
9.8 (4.6) |
8.8 (2.9) |
8.9 (3.1) |
|
| 2007 versus 2012 |
p = 0.002a |
p = 0.000a |
p = 0.000a |
0.963 p = 0.001b |
|
Tooth loss |
Lost teeth Mean (sd)
c
|
Stable all teeth Mean (sd)
d
|
Stable tooth loss Mean (sd)
e
|
|
|
Norway |
|
|
|
|
| OIDP 2007 |
9.8 (3.6) |
8.5 (1.8) |
12.8 (6.8) |
|
| OIDP 2012 |
10.6 (4.4) |
8.5 (1.7) |
12.6 (6.9) |
|
| 2007 versus 2012 |
p = 0.032a |
p = 0.916a |
p = 0.243a |
0.997 p = 0.05b |
|
Sweden |
|
|
|
|
| OIDP 2007 |
9.4 (3.3) |
8.6 (2.0) |
12.1 (6.9) |
|
| OIDP 2012 |
9.5 (3.7) |
8.3 (1.3) |
10.9 (5.9) |
|
| 2007 versus 2012 | p = 0.690a | p = 0.000a | p = 0.000a | 0.988 p = 0.001b |
aWilcoxon matched pair signed rank test.
bGLM repeated measure.
cBonferroni post hoc analyses indicated the following (p < 0.05):
● Statistically significant differences in mean OIDP change by change score of satisfaction with oral health, satisfaction with tooth appearance and tooth loss in Norway: group c vs. group d, group c vs. group e and group d vs. group e.
● Statistically significant differences in mean OIDP change by change score of satisfaction with oral health and satisfaction with tooth appearance in Sweden: group c vs. group d and group d vs. group e.
● Statistically significant differences in mean OIDP change by change score of tooth loss in Sweden: group c vs. group d, group c vs. group e and group d vs. group e.