Table 2 Bone mineral density change among patients with schizophrenia and healthy individuals.

From: Long-term Use of Clozapine is Protective for Bone Density in Patients with Schizophrenia

 

Controls

Non-clozapine antipsychotics

Clozapine

P value

DEXA Z score, overall

(N = 44)

(N = 69)

(N = 42)

 

Baseline, mean (SD)

0.28 (1.09)

−0.28 (1.14)

0.38 (1.45)

0.008

Endpoint, mean (SD)

0.42 (1.08)

−0.44 (0.96)

0.41 (1.49)

<0.001

Difference, mean (SD)

0.16 (0.47)

−0.16 (0.66)

0.03 (0.64)

0.015

DEXA Z score, 1 year follow up

 

(N = 48)

(N = 29)

 

Baseline, mean (SD)

−0.54 (1.10)

0.16 (1.49)

0.017

Endpoint, mean (SD)

−0.68 (0.88)

0.09 (1.47)

0.006

Difference, mean (SD)

−0.13 (0.56)

−0.08 (0.70)

0.808

DEXA Z score, 3 year follow up

(N = 44)

(N = 22)

(N = 13)

 

Baseline, mean (SD)

0.28 (1.09)

0.28 (1.15)

0.88 (1.29)

0.228

Endpoint, mean (SD)

0.42 (1.08)

0.09 (0.93)

1.13 (1.29)

0.052

Difference, mean (SD)

0.16 (0.47)

−0.21 (0.87)

0.25 (0.41)

0.039

  1. Mann-Whitney U test, for variables with non-normal distributions.