|
Method of random sequence generation
| |
|
Low risk
|
161 (14.9%)
|
|
Random number table
|
121 (11.2%)
|
|
Drawing of lots
|
28 (2.6%)
|
|
Computer
|
9 (0.8%)
|
|
Lottery
|
1 (0.1%)
|
|
Coin toss
|
1 (0.1%)
|
|
Dice
|
1 (0.1%)
|
|
High risk
| |
|
Visiting sequence of inpatient/outpatient, the card number of inpatient/outpatient number and birth date.
|
113 (10.5%)
|
|
Unclear
|
803 (74.6%)
|
|
Method of allocation concealment
| |
|
Low risk
|
10 (1%)
|
|
Central allocation
|
7 (0.7%)
|
|
Sealed opaque envelopes
|
3 (0.3%)
|
|
High risk
|
--
|
|
Unclear
|
1067 (99%)
|
|
Blinding
| |
|
Low risk
|
6 (0.6%)
|
|
Single blind (participants)
|
3 (0.3%)
|
|
Double blind (participants and investigators)
|
2 (0.2%)
|
|
Triple blind (participants, investigators, outcome assessors)
|
1 (0.1%)
|
|
High risk
|
--
|
|
Unclear
|
1071 (99.4%)
|
|
Incomplete outcome data
| |
|
Low risk
|
988 (91.7%)
|
|
High risk
|
--
|
|
Unclear
|
89 (8.3%)
|
|
Selective reporting
| |
|
Low risk
|
--
|
|
High risk
|
18 (1.7%)
|
|
Unclear
|
1059 (98.3%)
|
|
Other bias
| |
|
Low risk
|
--
|
|
High risk
|
2 (0.2%)
|
|
Unclear
|
1075 (99.8%)
|
