Table 1

Baseline characteristics of subjects and clusters
Intervention arm Control arm
Variable (N = 1688) (N = 1810)
Cluster *
Age, no./cluster †
<=82 140 ± 70 149 ± 89
>82 141 ± 79 152 ± 94
Female, no./cluster 154 ± 69 166 ± 77
Charlson Comorbidity Index, no./cluster ‡
0 52 ± 28 37 ± 16
1+ 228 ± 78 263 ± 116
Ward type, no./cluster ∥
Geriatrics unit 361 ± 0 377 ± 0
Long-term care unit 261 ± 0 363 ± 0
General Medicine unit 267 ± 125 268 ± 142
Subjects
Age in years - Median (IQR) § 82 (74–87) 82 (75–88)
Female - no (%) 924 (55) 996 (55)
Charlson Comorbidity Index - no (%)¶
0 312 (18) 223 (12)
1 620 (37) 597 (33)
2 520 (31) 612 (34)
3 184 (11) 305 (17)
4 42 (3) 57 (3)
5 5 (0) 8 (0)
6 0 (0) 0 (0)
N.a. 5 (0) 8 (0)
Ward type - no (%)
Geriatrics unit 361 (21) 377 (21)
Long-term care unit 261 (16) 363 (20)
General Medicine unit 1066 (63) 1070 (59)

*Plus-minus values are means +/− SD.

†Age in Cluster statistics recoded in two classes, based on subjects’ median age (82).

‡Charlson Index in Cluster statistics recoded in two classes: 0 (no comorbidities).

and 1+ (with comorbidities).

∥Geriatrics and Long-term care ward types have 1 unit in both arms: then SD=0.

§IQR = InterQuartile Range.

¶Percentages may not add up to 100 due to rounding.

Caminiti et al.

Caminiti et al. BMC Health Services Research 2013 13:14   doi:10.1186/1472-6963-13-14

Open Data