| Variable |
observed correlation |
Z transform |
deattenuated correlation |
Z transform |
| NAPAP, 1968 (o.d.) |
0.19 |
0.192 |
0.243 |
0.248 |
| salicylates, 1968 (mg%) |
0.068 |
0.069 |
0.108 |
0.108 |
| Difference between correlations |
0.122 |
0.124 |
0.135 |
0.139 |
| (95%CI) |
(0.051, 0.193) |
|
(0.035, 0.235) |
|
| se |
|
0.037 |
|
0.053 |
| V statistic |
|
3.344 |
|
2.64 |
| p-value |
|
0.001 |
|
0.008 |
|
| The V statistic for the observed and deattenuated Pearson correlations is based on (7) and (5), respectively. |
| Table 5: Observed and deattenuated Pearson Correlations between serum creatinine at baseline (1968) vs. each of NAPAP and salicylates at the baseline clinic visit (1968), Swiss Analgesic Study, n=1168. |
