Table 1

Age and gender distribution of survey area and sample population of the four regions in Papua New Guinea2

	National Capital District				Highlands				Coastal				Islands				Papua New Guinea (combined)
	Region (N, %)		Sample (n, %)		Region (N, %)		Sample (n, %)		Region (N, %)		Sample (n, %)		Region (N, %)		Sample (n, %)		Region (N, %)		Sample (n, %)
Age group (years)*
50–59	20 026	66.4	841	70.6	181 431	56.4	675	56.0	138 304	55.6	595	47.9	74 287	57.1	614	52.1	414 048	56.7	2725	56.6
60–69	7439	24.7	268	22.5	101 477	31.6	365	30.3	73 502	29.6	368	29.6	36 235	27.8	329	27.9	218 653	29.9	1330	27.6
70–79	2073	6.9	68	5.7	31 071	9.7	123	10.2	28 827	11.6	200	16.1	14 846	11.4	158	13.4	76 807	10.5	549	11.4
80+	622	2.1	15	1.3	7522	2.3	42	3.5	7925	3.2	79	6.4	4753	3.7	78	6.6	20 822	2.9	214	4.4
Male	17 691	58.7	535	44.9	181 428	56.4	717	59.5	130 407	52.5	627	50.5	69 297	53.3	599	50.8	398 823	54.6	2478	51.4
Female	12 469	41.3	657	55.1†	140 063	43.6	488	40.5†	118 151	47.5	615	49.5	60 824	46.7	680	49.2	331 507	45.4	2340	48.6

*All four regions were significantly different in the distribution of age groups between the sample and regional population (all p<0.05). χ² test was used for comparison.
†Comparison of sample population to regional population distribution by gender using Χ² test where p<0.05.