Table:
Intervention and population	N	Cardiac arrests	OR (95 % CI)	p value
Without checklist	83	44 (53.0)	1 (Referencea)
With checklist	382	97 (25.4)	0.30 (0.18; 0.49)	<0.001
Number of interventions, n (%)a
1	60	21 (35.0)	0.47 (0.24; 0.94)	0.033
2	23	11 (47.8)	0.81 (0.32; 2.05)	0.65
3	62	22 (38.7)	0.48 (0.24; 0.96)	0.036
4	102	21 (20.6)	0.23 (0.12; 0.44)	<0.001
5	85	16 (18.8)	0.20 (0.10; 0.41)	<0.001
6 and 7	50	6 (12.0)	0.12 (0.04; 0.31)	<0.001
8 and 9	0	0
Set of interventions, n (%)
1–3 items	145	54 (37.2)	0.52 (0.30; 0.90)	0.02
≥ 4 items	237	43 (18.1)	0.19 (0.11; 0.34)	0.001

Translate the figure into Markdown format.

| Intervention and population | N | Cardiac arrests | OR (95 % CI) | p value | 
 | --- | --- | --- | --- | --- | 
 | Without checklist | 83 | 44 (53.0) | 1 (Referencea) |  | 
 | With checklist | 382 | 97 (25.4) | 0.30 (0.18; 0.49) | <0.001 | 
 | <COLSPAN=5> Number of interventions, n (%)a | 
 | 1 | 60 | 21 (35.0) | 0.47 (0.24; 0.94) | 0.033 | 
 | 2 | 23 | 11 (47.8) | 0.81 (0.32; 2.05) | 0.65 | 
 | 3 | 62 | 22 (38.7) | 0.48 (0.24; 0.96) | 0.036 | 
 | 4 | 102 | 21 (20.6) | 0.23 (0.12; 0.44) | <0.001 | 
 | 5 | 85 | 16 (18.8) | 0.20 (0.10; 0.41) | <0.001 | 
 | 6 and 7 | 50 | 6 (12.0) | 0.12 (0.04; 0.31) | <0.001 | 
 | 8 and 9 | 0 | 0 |  |  | 
 | <COLSPAN=5> Set of interventions, n (%) | 
 | 1–3 items | 145 | 54 (37.2) | 0.52 (0.30; 0.90) | 0.02 | 
 | ≥ 4 items | 237 | 43 (18.1) | 0.19 (0.11; 0.34) | 0.001 |