Table 2

Primary and secondary outcomes at baseline and 12 and 24 months for intervention and control groups

Measure	Measurement time point	Control group Baseline n=401 12 months n=298 24 months n=298	Intervention group Baseline n=361 12 months n=237 24 months n=233	Primary analysis		Multiple imputation analysis (control group n=401; intervention group n=361)
Measure	Measurement time point			Adjusted* OR (95% CI)†	P value	Adjusted* OR (95% CI)†	P value
Primary outcome measure
Families with primary outcome measure (having a working smoke alarm, storing poisons out of reach and having a stairgate or no stairs).	Baseline	117 (29.3%) [2]	112 (31.1%) [1]	1.00 (0.67 to 1.51)	0.98	0.96 (0.65 to 1.43)	0.85
	12 months	170 (57.1%) [0]	132 (56.4%) [3]	0.98 (0.61 to 1.56)	0.92	1.25 (0.79 to 1.96)	0.34
	24 months	144 (48.8%) [3]	130 (55.8%) [0]	1.58 (0.98 to 2.55)	0.060	1.75 (1.12 to 2.73)	0.014
Working smoke alarm	Baseline	375 (94.0%) [2]	329 (91.4%) [1]	0.85 (0.38 to 1.88)	0.69	0.83 (0.40 to 1.74)	0.63
	12 months	279 (93.6%) [0]	215 (91.9%) [3]	0.67 (0.28 to 1.57)	0.35	0.88 (0.36 to 2.17)	0.79
	24 months	283 (95.9%) [3]	218 (93.6%) [0]	0.83 (0.28 to 2.46)	0.73	1.20 (0.45 to 3.18)	0.72
Storing poisons out of reach	Baseline	203 (51.0%) [3]	201 (56.0%) [2]	0.89 (0.60 to 1.30)	0.53‡	0.86 (0.60 to 1.25)	0.44
	12 months	190 (63.8%) [0]	159 (68.0%) [3]	1.13 (0.69 to 1.86)	0.63	1.45 (0.88 to 2.41)	0.15
	24 months	198 (67.1%) [3]	170 (73.3%) [1]	1.81 (1.06 to 3.07)	0.029	1.82 (1.13 to 2.93)	0.015
Has a stairgate or no stairs	Baseline	210 (52.9%) [4]	198 (55.0%) [1]	1.37 (0.93 to 2.01)	0.11	1.29 (0.90 to 1.87)	0.17
	12 months	262 (87.9%) [0]	202 (86.3%) [3]	0.84 (0.40 to 1.76)	0.65	1.13 (0.58 to 2.20)	0.73
	24 months	222 (75.3%) [3]	177 (77.3%) [4]	1.17 (0.66 to 2.11)	0.59	1.38 (0.78 to 2.42)	0.26
Secondary outcome measures
Supervised bathing	Baseline	387 (98.7%) [9]	351 (98.0%) [3]	0.33 (0.06 to 2.01)	0.23	0.63 (0.15 to 2.70)	0.53
	12 months	278 (93.6%) [1]	223 (94.9%) [2]	1.18 (0.44 to 3.13)	0.75	0.94 (0.39 to 2.34)	0.91
	24 months	266 (91.1%) [6]	217 (96.0%) [7]	1.85 (0.72 to 4.79)	0.20	1.51 (0.66 to 3.47)	0.33
Using a fireguard or not having a home fire	12 months	233 (78.5%) [1]	203 (87.1%) [4]	3.04 (1.57 to 5.89)	0.001	2.98 (1.61 to 5.53)	0.001
Using a fireguard or not having a home fire	24 months	235 (80.2%) [5]	192 (85.3%) [8]	3.17 (1.63 to 6.16)	0.001	3.06 (1.60 to 5.85)	0.001
Blind cords out of reach	12 months	244 (82.2%) [1]	202 (86.3%) [3]	1.03 (0.55 to 1.92)	0.93	1.06 (0.59 to 1.93)	0.84
Blind cords out of reach	24 months	251 (86.0%) [6]	201 (89.0%) [7]	0.72 (0.36 to 1.44)	0.35	0.76 (0.40 to 1.43)	0.40
Safety catches on any windows	12 months	159 (53.5%) [1]	159 (68.0%) [3]	1.29 (0.80 to 2.09)	0.30	1.33 (0.84 to 2.13)	0.21
Safety catches on any windows	24 months	174 (59.2%) [4]	148 (65.5%) [7]	0.78 (0.48 to 1.27)	0.32	0.76 (0.47 to 1.22)	0.25
Fire escape plan	12 months	184 (62.0%) [1]	181 (76.7%) [1]	1.78 (1.08 to 2.95)	0.025	1.81 (1.10 to 2.94)	0.020
Fire escape plan	24 months	196 (67.1%) [6]	174 (77.0%) [7]	1.81 (1.06 to 3.08)	0.030	1.72 (1.06 to 2.78)	0.029
Outdoor supervision	24 months	203 (73.0%) [20]	169 (79.9%) [21]	1.30 (0.73 to 2.31)	0.37	1.28 (0.76 to 2.14)	0.35
Post hoc analysis: mean (± standard deviation) total number of home safety practices adopted and adjusted difference between means
Total number of home safety practices adopted	Baseline (max 4)	2.97±0.79 [51]	3.01±0.83 [32]	0.01 (−0.14 to 0.15)	0.92	0.00 (-0.20 to 0.19)	0.97‡
	12 months (max 8)	6.15±1.37 [36]	6.62±1.21 [24]	0.34 (0.06 to 0.63)	0.019	0.39 (0.13 to 0.65)	0.004
	24 months (max 9)	6.92±1.44 [57]	7.37±1.39 [34]	0.46 (0.13 to 0.79)	0.006	0.42 (0.12 to 0.71)	0.005

[ ] denotes missing values.
*The model controlled for: number of siblings under the age of 16 years; maternal age at the time of birth of the first child; the Index of Multiple Deprivation (IMD) of the home postcode, whether the family lived in a single-adult household; the corresponding baseline variable (where collected) for each outcome; and the matched wards factor.
†The control group was the reference group.
‡Model did not converge. ‘Matched wards’ factor removed, and the model converged.