Table 1.

Multivariate analysis of the last available estimated glomerular filtration rate in 953 patients treated with lithium for up to 33 years

Variable	Beta	P value	95% confidence interval
Gender (male versus female)	3.47	0.008	0.91	6.02
Current age	–0.73	3.0 × 10–56	–0.82	–0.65
Duration of lithium treatment	–0.73	1.8 × 10–14	–0.91	–0.55