Table 2.

Healthcare utilisation of the population in the national health insurance service-senior (NHIS-Senior) cohort

	2002			2005			2012			2015
	N	Subgroup %	Total %	N	Subgroup %	Total %	N	Subgroup %	Total %	N	Subgroup %	Total %
Cohort population	558 147		100	521 967		100	405 614		100	352 869		100
Inpatients
Number of inpatients	51 515	100	9.2	88 127	100	16.9	115 557	100	28.5	108 203	100	30.7
Frequency of inpatient visits
1	37 002	71.8		55 545	63.0		55 408	48.0		48 302	44.6
2	9625	18.7		18 632	21.1		24 911	21.6		22 202	20.5
3	2484	4.8		6154	7.0		9866	8.5		9376	8.7
4+	2404	4.7		7796	8.9		25 372	22.0		28 323	26.2
Hospital days
0–14	35 805	69.5		55 595	63.1		62 764	54.3		55 758	51.5
15–29	9077	17.6		16 217	18.4		20 048	17.4		17 614	16.3
30–59	4407	8.6		9692	11.0		12 438	10.8		11 509	10.6
61–119	1574	3.1		3892	4.4		6981	6.0		6811	6.3
120+	652	1.3		2731	3.1		13 326	11.5		16 511	15.3
Outpatients
Number of outpatients	453 969	100	81.3	478 209	100	91.6	387 096	100	95.4	335 792	100	95.2
Frequency of outpatient visits
0–4	84 170	18.5		71 238	14.9		24 289	6.3		20 587	6.1
5–9	78 003	17.2		65 699	13.7		36 232	9.4		32 016	9.5
10–14	67 237	14.8		63 771	13.3		45 870	11.9		39 871	11.9
15–29	122 020	26.9		135 034	28.2		118 729	30.7		105 434	31.4
30–59	75 758	16.7		99 637	20.8		106 866	27.6		92 806	27.6
60+	26 781	5.9		42 830	9.0		55 110	14.2		45 078	13.4
Medication
Number of long-term medications prescribed over 300 days per year	51 471	100	9.2	123 372	100	23.6	210 708	100	52.0	198 971	100	56.4
Number of active ingredients (long-term prescriptions)
1	15 646	30.4		29 344	23.8		37 683	17.9		33 704	16.9
2	13 204	25.7		29 664	24.0		41 664	19.8		35 935	18.1
3	9149	17.8		23 126	18.7		36 627	17.4		32 827	16.5
4	5962	11.6		15 641	12.7		29 561	14.0		27 811	14.0
5+	7510	14.6		25 597	20.8		65 173	30.9		68 694	34.5