Table 2

Frequency of successful contact at each timepoint (2 weeks, 1 month, 3 months and 6 months) by patient demographic and hospital variables

	Availability T1			Availability T2			Availability T3			Availability T4
	N	%	P value	N	%	P value	N	%	P value	N	%	P value
Sex			0.007			0.9			0.2			0.2
Male	1296	53.3		806	86.0		676	87.8		597	92.4
Female	473	58.8		310	87.1		253	83.8		214	89.5
Urban status			0.9			0.4			0.8			0.1
Rural	201	55.1		134	88.7		109	86.5		102	95.3
Urban	1565	54.7		981	86.0		819	85.9		708	91.1
Household SES cluster			<0.001			0.08			0.2			0.2
Rural poor	9	31.0		5	71.4		3	100.0		3	100.0
Rural wealthy	140	57.4		92	91.1		78	86.7		75	96.2
Urban poor	15	65.2		12	92.3		7	77.8		9	100.0
Urban middle-class homeowners	73	42.7		47	82.5		39	75.0		34	97.1
Urban middle-class tenants	514	59.4		344	87.5		291	86.1		251	90.9
Urban wealthy	279	49.5		197	81.1		158	80.2		151	95.6
Travel distance (km)			0.1			0.5			1.0			0.1
<5	238	59.7		137	86.7		118	90.8		103	88.0
5–10	256	52.9		162	91.0		145	90.1		112	88.2
10–50	533	58.1		310	90.9		259	91.2		237	92.2
>50	78	52.4		48	90.6		41	89.1		33	100.0
Injury mechanism			0.001			<0.001			0.07			0.02
Blunt	604	50.5		371	81.9		301	82.0		252	89.4
Penetrating	156	54.4		96	82.8		88	86.3		66	85.7
Mixed	964	58.0		628	90.5		519	88.0		477	93.9
Neither/Other	31	53.5		13	68.4		12	92.3		8	80.0
Injury location			0.6			0.9			1.0			0.07
Head and neck	25	54.5		16	88.9		12	75.0		11	100.0
Face	72	47.1		35	83.3		27	79.2		24	92.3
Chest	10	58.8		7	100.0		5	71.4		5	100.0
Abdomen	2	66.7		1	100.0		1	100.0		0	0.0
Pelvis	3	100.0		2	100.0		2	100.0		2	100.0
Spine	1	50.0		1	100.0		1	100.0		1	100.0
Extremity	118	52.2		61	85.9		48	80.0		38	80.9
Injury intent			0.001			0.9			0.6			0.9
Unintentional	1578	56.1		997	86.3		830	86.4		726	91.4
Intentional (self-harm)	6	42.9		6	100.0		6	100.0		6	100.0
Intentional (assault/homicide)	162	45.3		100	87.0		83	82.2		73	93.6
Legal intervention/War operations	1	20.0		1	100.0		1	100.0		1	100.0
Events unclear	2	28.6		1	100.0		1	100.0		1	100.0
Unknown	20	57.1		12	85.7		9	75.0		5	83.3
Education			<0.001			0.6			0.02			1.0
No formal education	71	57.3		49	87.5		33	73.3		35	92.1
Primary school	341	47.4		233	85.4		200	85.8		167	91/3
Secondary/High school	989	56.5		601	86.7		502	87.8		440	91.5
Tertiary/College	249	60.6		162	88.5		135	83.9		118	92.2
Other	10	83.3		5	71.4		7	100.0		7	100.0
Alcohol use			0.09			0.2			0.005			1.0
No	1440	55.7		914	85.7		749	84.5		658	91.6
Yes	148	51.2		94	91.3		82	92.3		70	92.1
Unknown	180	50.7		109	89.3		99	92.5		84	91.3
Hospital			<0.001			<0.001			<0.001			<0.001
Catholic Hospital Pouma	237	67.7		178	96.2		158	98.1		151	98.7
Laquintinie Hospital of Douala	1005	55.9		606	89.5		514	88.01		439	92.6
Edea Regional Hospital	320	69.3		208	84.6		181	87.9		167	96.5
Limbe Regional Hospital	742	57.7		378	78.9		286	75.5		210	78.1

The bolded values on Table are those p-values that were statistically significant (i.e. less than 0.05).
SES, socio-economic status.