|
Term ‘cluster’ included in title or abstract
|
44
|
(60)
|
10
|
(34)
|
34
|
(77)
|
7
|
(32)
|
37
|
(73)
|
7
|
(64)
|
15
|
(83)
|
12
|
(80)
|
|
Cluster design justified
|
30
|
(41)
|
11
|
(38)
|
19
|
(43)
|
9
|
(41)
|
21
|
(41)
|
4
|
(36)
|
8
|
(44)
|
7
|
(47)
|
|
Eligibility criteria reported for individuals
|
65
|
(89)
|
25
|
(86)
|
43
|
(98)
|
20
|
(91)
|
45
|
(88)
|
9
|
(82)
|
16
|
(89)
|
15
|
(100)
|
|
Eligibility criteria reported for clusters
|
44
|
(60)
|
17
|
(59)
|
28
|
(64)
|
13
|
(59)
|
31
|
(61)
|
5
|
(45)
|
10
|
(56)
|
12
|
(80)
|
|
Sample size calculation reported
|
43
|
(59)
|
14
|
(48)
|
29
|
(66)
|
8
|
(36)
|
35
|
(69)
|
6
|
(55)
|
11
|
(61)
|
12
|
(80)
|
|
Clustering accounted for in sample size calculation
|
20
|
(27)
|
4
|
(14)
|
16
|
(36)
|
2
|
(9)
|
18
|
(35)
|
4
|
(36)
|
5
|
(28)
|
7
|
(47)
|
|
Evidence of variation in cluster size considered
|
4
|
(6)
|
0
|
(0)
|
4
|
(9)
|
1
|
(4)
|
3
|
(6)
|
1
|
(9)
|
1
|
(6)
|
2
|
(13)
|
|
Restricted randomisation
|
50
|
(68)
|
18
|
(62)
|
32
|
(73)
|
15
|
(68)
|
35
|
(69)
|
10
|
(91)
|
12
|
(67)
|
10
|
(67)
|
|
Potential for
|
None
|
36
|
(49)
|
14
|
(48)
|
22
|
(50)
|
12
|
(57)
|
24
|
(47)
|
7
|
(64)
|
8
|
(45)
|
7
|
(47)
|
|
identification/recruitment bias
|
Unclear
|
24
|
(32)
|
13
|
(45)
|
11
|
(25)
|
9
|
(41)
|
15
|
(29)
|
2
|
(18)
|
4
|
(22)
|
5
|
(33)
|
|
Unlikely
|
8
|
(11)
|
1
|
(3)
|
7
|
(16)
|
0
|
(0)
|
8
|
(16)
|
2
|
(18)
|
4
|
(22)
|
1
|
(6)
|
|
Possible
|
5
|
(7)
|
1
|
(3)
|
4
|
(9)
|
1
|
(5)
|
4
|
(8)
|
0
|
(0)
|
2
|
(11)
|
2
|
(13)
|
|
Outcome assessor blind to allocation
|
32
|
(44)
|
12
|
(41)
|
20
|
(45)
|
9
|
(41)
|
23
|
(45)
|
6
|
(55)
|
7
|
(39)
|
7
|
(47)
|
|
Clustering accounted for in analysis
|
54
|
(74)
|
19
|
(66)
|
35
|
(80)
|
13
|
(59)
|
41
|
(80)
|
8
|
(73)
|
15
|
(83)
|
12
|
(80)
|
|
Numbers of clusters randomised reported
|
71
|
(97)
|
29
|
(100)
|
42
|
(95)
|
21
|
(95)
|
50
|
(98)
|
9
|
(82)
|
18
|
(100)
|
15
|
(100)
|
|
Reported baseline of individual characteristics
|
69
|
(95)
|
28
|
(97)
|
41
|
(93)
|
22
|
(100)
|
47
|
(92)
|
10
|
(91)
|
17
|
(94)
|
14
|
(93)
|
|
Baseline of cluster characteristics reported
|
27
|
(37)
|
7
|
(24)
|
20
|
(45)
|
4
|
(18)
|
24
|
(47)
|
5
|
(45)
|
10
|
(56)
|
6
|
(40)
|
|
P-values not calculated for individual baseline comparisons
|
41
|
(56)
|
16
|
(55)
|
25
|
(57)
|
9
|
(43)
|
32
|
(63)
|
2
|
(18)
|
13
|
(72)
|
10
|
(67)
|
|
Reported numbers of clusters analysedd
|
63
|
(86)
|
25
|
(86)
|
39
|
(89)
|
18
|
(81)
|
46
|
(90)
|
9
|
(82)
|
16
|
(89)
|
14
|
(93)
|
|
Reported numbers of individuals analysed
|
66
|
(90)
|
24
|
(83)
|
39
|
(89)
|
21
|
(95)
|
42
|
(82)
|
8
|
(73)
|
17
|
(94)
|
14
|
(93)
|
|
Intra-cluster correlation coefficient (ICC) from analysis reportede
|
8
|
(14)
|
1
|
(5)
|
7
|
(20)
|
1
|
(5)
|
7
|
(18)
|
0
|
(0)
|
4
|
(14)
|
4
|
(33)
|
|
Adverse events reported
|
17
|
(23)
|
5
|
(17)
|
12
|
(27)
|
3
|
(14)
|
13
|
(25)
|
4
|
(36)
|
4
|
(22)
|
9
|
(60)
|
