Table 2.

Descriptive of the sample in 8 rounds of observational study

Characteristics	Round								Total
	1	2	3	4	5	6	7	8
Total	3005	890	1316	1560	1472	1425	1387	1006	12 061
Observation time
Morning	1151	644	1316	1560	1472	1425	1387	1006	9961
Afternoon	1854	246	0	0	0	0	0	0	2100
Weekday
No	1350	653	273	454	475	382	307	297	4191
Yes	1655	237	1043	1106	997	1043	1080	709	7870
Type of vehicle
Sedan/Saloon	1501	601	762	831	810	772	830	570	6677
SUV/4WD	367	203	201	218	190	225	276	189	1869
Taxi	1010	69	299	450	417	347	234	217	3043
Others*	127	17	54	61	55	81	47	30	472
Area
Central urban	1808	18	811	799	959	1081	996	768	7240
Urban	1197	872	421	761	513	344	391	238	4737
Periurban	0	0	84	0	0	0	0	0	84
Location type
Entertainment places	0	207	84	0	0	0	0	0	291
Shopping malls	0	446	0	0	0	0	0	0	446
Kindergarten	58	237	0	0	0	0	0	0	295
Children’s hospital	2947	0	1232	1560	1472	1425	1387	1006	11 029
Child’s age
<5 years	1956	538	739	1046	921	954	846	623	7623
5–12 years	1049	349	575	493	550	467	541	383	4407
Missing	0	3	2	21	1	4	0	0	31
Child’s gender
Boy	1697	491	741	804	820	751	840	581	6725
Girl	1147	373	427	587	533	587	498	388	4540
Missing	161	26	148	169	119	87	49	37	796
Other child present
No	2793	828	1164	1446	1293	1337	1314	954	11 129
Yes	212	62	152	114	179	88	73	52	932
Child’s position
Rear seat passenger	2850	836	1261	1525	1440	1410	1367	1000	11 689
Front seat passenger	155	54	55	35	32	15	20	6	372
Child restraint use
No	2851	782	1267	1507	1367	1316	1277	920	11 287
Yes	154	108	49	53	105	109	110	86	774
Child sitting on adult’s lap
No	2899	868	1297	1546	1465	1413	1376	537	11 401
Yes	106	22	19	14	7	12	11	469	660

*Type of vehicle Other involve: pickup/light truck/bus/minibus/minivan/school bus.

SUV, Sport utility vehicle; 4WD, four-wheel drive vehicles.