Table 2.

Main outcomes at 12 months. Values are numbers (percentages) of nursing home residents unless stated otherwise

Outcome	Control homes (n=6; 170 residents)	Intervention homes (n=6; 176 residents)	Weighted mean difference (95% CI)*	P value*	Intracluster correlation coefficient
Taking neuroleptics	69/164 (42)	40/174 (23)	19.1 (0.5 to 37.7)	0.045	0.10
Mean† (SD) median dose in chlorpromazine equivalents (No of patients)	107.1 (15.4) (n=69)	102.1 (23.1) (n=40)	4.9 (−20.0 to 29.9)	0.67	0‡
Taking other psychotropics	92/162 (57)	109/174 (63)	−5.9 (−27.2 to 5.5)	0.56	0.080
At least one fall in past 12 months	90/165 (55)	91/175 (52)	2.6 (−18.7 to 23.8)	0.27	0.061
Mean† (SD) Cohen-Mansfield agitation inventory§ total (No of patients)	42.0 (5.9) (n=162)	41.6 (7.2) (n=172)	0.3 (−8.3 to 8.9)	0.94	0.087
At least one episode of aggression in past 12 months	16/165 (10)	14/173 (8)	1.6 (−12.7 to 15.8)	0.25	0.10
Mean† (SD) wellbeing¶** (No of patients)	0.9 (0.35) (n=153)	1.1 (0.04) (n=149)	−0.2 (−0.5 to 0.2)	0.29	0.075
Spending some time (>0%) asleep**	114/153 (75)	110/149 (74)	0.7 (−8.5 to 9.9)	0.87	0‡
Spending some time (>0%) withdrawn**	71/153 (46)	56/149 (38)	8.8 (−25.2 to 42.8)	0.58	0.22

^*Adjusted for clustering (estimated from weighted t test).

^†Mean of medians (data skewed, therefore median appropriate as summary statistic for each cluster).

^‡Truncated at zero.

^§Range 29-203; higher scores mean more agitation (scores >40 usually accepted as clinically significant).

^¶Range −5 to 5.

^**Estimated using dementia care mapping.