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Table 3 Aggregation measures (n = 25 nursing homes)

From: The care unit in nursing home research: Evidence in support of a definition

Dimension F BMS WMS ICC1 ICC2 η2 ω2 PROB
UNIT LEVEL AGGREGATION
Leadership 2.1733 0.7596 0.3495 0.0768 0.5399 0.1417 0.0765 0.0000
Culture 2.9261 0.7410 0.2533 0.1201 0.6582 0.1814 0.1193 0.0000
Evaluation 2.3907 0.7391 0.3092 0.0897 0.5817 0.1540 0.0895 0.0000
Social Capital 1.7570 0.4074 0.2319 0.0509 0.4308 0.1181 0.0508 0.0000
Formal Interactions 1.5716 0.8838 0.5624 0.0389 0.3637 0.1064 0.0387 0.0009
Informal Interactions 1.3070 3.3072 2.5304 0.0213 0.2349 0.0906 0.0213 0.0342
Structural and Electronic Resources 2.5201 6.8517 2.7189 0.0972 0.6032 0.1612 0.0972 0.0000
OS-staff 7.8907 7.3179 0.9274 0.3281 0.8733 0.3728 0.3254 0.0000
OS-space 7.7267 5.4560 0.7061 0.3228 0.8706 0.3685 0.3207 0.0000
OS-time 4.9345 2.8298 0.5735 0.2180 0.7973 0.2724 0.2170 0.0000
NURSING HOME LEVEL AGGREGATION
Leadership 3.7238 1.3391 0.3596 0.0521 0.7315 0.0682 0.0498 0.0000
Culture 7.0012 1.8055 0.2579 0.1079 0.8572 0.1205 0.1032 0.0000
Evaluation 4.5091 1.4341 0.3181 0.0661 0.7782 0.0815 0.0634 0.0000
Social Capital 3.2422 0.7592 0.2342 0.0432 0.6916 0.0600 0.0415 0.0000
Formal Interactions 2.6004 1.4760 0.5676 0.0313 0.6154 0.0485 0.0298 0.0000
Informal Interactions 2.0836 5.2765 2.5324 0.0214 0.5201 0.0394 0.0205 0.0017
Structural and Electronic Resources 5.8401 16.0841 2.7541 0.0889 0.8288 0.1032 0.0855 0.0000
OS-staff 23.9814 22.9152 0.9555 0.3166 0.9583 0.3184 0.3050 0.0000
OS-space 22.1040 16.3660 0.7404 0.2985 0.9548 0.3015 0.2877 0.0000
OS-time 14.6247 8.4892 0.5805 0.2155 0.9316 0.2229 0.2075 0.0000
  1. F = test statistic from one-way analysis of variance (ANOVA)
  2. The source table from ANOVA was used to calculate Interclass correlation 1 (ICC 1), Interclass correlation 2 (ICC 2), Eta Square (η2), and Omega Square (ω2) as follows:
  3. 1. ICC(1) = (BMS - WMS)/(BMS + [K - 1] WMS), where BMS is the between-group mean square, WMS is the within-group mean square, and K is the number of subjects per group. The average K for unequal group size was calculated as K = (1/[N - 1]) (ΣK - [ΣK2/ΣK]);
  4. 2. ICC(2) = (BMS - WMS)/BMS;
  5. 3. η2 = SSB/SST, where SSB is the sum of squares between groups and SST is the sum of squares total; and
  6. 4. ω2 = (SSB - [N - 1] WMS)/(SST + WMS).