Completeness of police reporting of traffic crashes in Nepal: Evaluation using a community crash recording system

Figures & data

Figure 1. Definitions of reporting level (adapted from Doggett et al. 2018).

Table 1. Comparison of LRK and police crash and injury data.

	Crashes/injuries recorded by the LRKs Number (percentage)	Crashes/injuries recorded by LRK as attended by the police Number (percentage of total recorded by LRKs)	Crashes/injuries recorded by the police Number (percentage)
Crashes with injuries	70 (63.6%)	35 (50.0%)	18 (78.3%)
Crashes without injuries	40 (36.4%)	11 (27.5%)	5 (21.7%)
Total number of crashes	110 (100.0%)	46 (41.8%)	23 (100.0%)
Fatality	5 (3.4%)	5 (100.0%)	8 (23.5%)
Severe injury	62 (42.2%)	45 (72.6%)	13 (38.2%)
Minor injury	78 (53.1%)	50 (64.1%)	6 (17.6%)
Unknown injury	2 (1.4%)	1 (50.0%)	7 (20.6%)
Total number of injuries	147 (100.0%)	101 (68.7%)	34 (100.0%)

Figure 2. Matched/missing records between LRK and police data.

Table 2. Reporting and matching rate for police and LRK data.

	Only in Police data	In Police and LRK data	Only in LRK data	Reporting rate		Matching rate
				Police	LRK	Police	LRK
Description	A	B	C	(A + B)/(A + B + C)	(B + C)/(A + B + C)	B/(A + B)	B/(B + C)
Total crash events	7	16	94	19.7%	94.0%	69.6%	14.5%
Fatality	3	5	0	100%	62.5%	62.5%	100%
Severe injury	4	9	53	19.7%	93.9%	69.2%	14.5%
Minor injury	6	0	78	7.1%	92.9%	0.0%	0.0%
Injury-unknown	7	0	2	77.8%	22.2%	0.0%	0.0%
Damage only	3	2	38	11.6%	93.0%	40.0%	5.0%
Single-vehicle	0	1	25	3.8%	100%	100%	3.8%
Vehicle-Vulnerable road user	2	6	10	44.4%	88.9%	75.0%	37.5%
Vehicle-vehicle	4	9	59	18.1%	94.4%	69.2%	13.2%

Doggett S, Ragland DR, Felschundneff G. 2018. Evaluating research on data linkage to assess underreporting of pedestrian and bicyclist injury in police crash data. UC Berkeley: Safe Transportation Research & Education Center. https://escholarship.org/uc/item/0jq5h6f5.

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Data availability statement

The data that support the findings of this study are available from the corresponding author (AK), upon request.