| |
|
|
|
|
|
|
| Variable |
observed Spearman correlation |
observed probit correlation |
Z transform |
deattenuated Spearman correlation |
deattenuatedprobit correlation |
Z transform |
| NAPAP, 1968 (o.d.) |
0.155 |
0.162 |
0.163 |
0.212 |
0.221 |
0.225 |
| salicylates, 1968 (mg%) |
0.081 |
0.085 |
0.085 |
0.127 |
0.133 |
0.134 |
| Difference between correlations |
0.074 |
0.077 |
0.078 |
0.085 |
0.088 |
0.091 |
| (95% CI) |
(0.013, 0.134) |
|
|
(-0.005, 0.174) |
|
|
| se |
|
|
0.033 |
|
|
0.049 |
| V statistic |
|
|
2.395 |
|
|
1.849 |
| p-value |
|
|
0.017 |
|
|
0.064 |
|
| The V statistic for the observed and deattenuated probit correlations is based on (7) and (5), respectively. |
| Table 6: Spearman Correlations between serum creatinine at baseline (1968) vs. each of NAPAP and salicylates at the baseline clinic visit (1968), Swiss Analgesic Study, n=168. |
