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Table 1 Descriptive statistics of background characteristics by region

From: Robustness of zero-augmented models over generalized linear models in analysing fertility data in Nigeria

RegionNorth CentralNorth EastNorth WestSouth EastSouth SouthSouth WestAll regions
Total (%)5572 (100)5766 (100)11877 (100)4476 (100)4942 (100)6315 (100)38948 (100)
Residence
 Rural1521 (27.3)1579 (27.4)3402 (28.7)3149 (70.3)1913 (38.7)4850 (76.8)16414 (42.1)
 Urban4051 (72.7)4187 (72.6)8474 (71.3)1327 (29.7)3029 (61.3)1465 (23.2)22534 (57.9)
Educational level
 None1763 (31.7)3711 (64.4)8240 (69.4)235 (5.2)249 (5.0)531 (8.4)14729 (37.8)
 Primary1253 (22.5)791 (13.7)1382 (11.6)940 (21.0)1144 (23.2)1224 (19.4)6734 (17.3)
 Secondary2016 (36.1)980 (17.0)1956 (16.5)2668 (59.6)2845 (57.6)3463 (54.8)13927 (35.8)
 Higher540 (9.7)284 (4.9)299 (2.5)634 (14.2)704 (14.2)1097 (17.4)3558 (9.1)
Religion
 Catholic931 (16.7)150 (2.6)314 (2.6)2114 (47.2)511 (10.4)294 (4.6)4316 (11.1)
 Others2052 (36.8)775 (13.5)818 (6.9)2278 (50.9)4253 (86.1)3746 (59.3)13921 (35.7)
 Islam2434 (43.7)4788 (83.0)10605 (89.3)14 (0.3)100 (2.0)2208 (35.0)20149 (51.7)
 Others155 (2.8)54 (0.9)139 (1.2)71 (1.6)76 (1.5)66 (1.1)561 (1.4)
Ethnicity
 Yoruba567 (10.2)29 (0.5)105 (0.9)14 (0.3)120 (2.4)4646 (73.6)5482 (14.1)
 Hausa/Fulani404 (7.3)2315 (40.2)10288 (86.6)40 (0.9)16 (0.3)201 (3.2)13263 (34.0)
 Igbo131 (2.4)18 (0.3)130 (1.1)4375 (97.7)471 (9.5)512 (8.1)5636 (14.5)
 Others4470 (80.2)3404 (59.1)1354 (11.4)47 (1.1)4336 (87.7)956 (15.1)14566 (37.4)
Wealth quintiles
 Poorest567 (10.2)2224 (38.6)4036 (34.0)189 (4.2)21 (0.4)95 (1.5)7132 (18.3)
 Poorer1111 (19.9)1491 (25.8)3488 (29.4)550 (12.3)419 (8.5)369 (5.8)7428 (19.1)
 Middle1726 (31.0)886 (15.4)1867 (15.7)1114 (24.9)1196 (24.2)697 (11.1)7486 (19.2)
 Richer1185 (21.3)664 (11.5)1462 (12.3)1293 (28.9)1585 (32.1)1803 (28.5)7992 (20.5)
 Richest984 (17.6)501 (8.7)1024 (8.6)1330 (29.7)1721 (34.8)3350 (53.1)8910 (22.9)
Contraceptive use
 None4774 (85.7)5585 (96.9)11324 (95.4)3285 (73.4)3528 (71.4)4224 (66.9)32722 (84.0)
 Folkloric29 (0.5)9 (0.2)37 (0.3)16 (0.4)69 (1.4)90 (1.4)250 (0.6)
 Traditional115 (2.1)15.7 (0.3)29 (0.2)532 (11.9)396 (8.0)546 (8.7)1634 (4.2)
 Modern654 (11.7)156 (2.7)486 (4.1)643 (14.4)949 (19.2)1454 (23.0)4342 (11.2)
Women working status
 No1708 (30.7)3098 (53.7)5012 (42.2)1589 (35.5)1671 (33.8)1605 (25.4)14685 (37.7)
 Yes3835 (68.8)2643 (45.8)6799 (57.3)2856 (63.8)3244 (65.7)4683 (74.2)24060 (61.8)
 Missing29 (0.5)25 (0.4)65 (0.5)31 (0.7)26 (0.5)26 (0.4)203 (0.5)
Age at first sex
 Never975 (17.5)672 (11.7)1239 (10.4)936 (20.9)755 (15.3)1009 (16.0)5586 (14.3)
 < 182192 (39.3)3601 (62.4)8551 (72.0)1276 (28.5)2007 (40.6)1925 (30.5)19552 (50.2)
 18+1930 (34.64)1183 (20.5)1610 (13.6)1970 (44.0)1884 (38.1)3114 (49.3011692 (30.0)
 Don’t know475 (8.5)310 (5.4)475 (4.01)294 (6.6)296 (6.0)266 (4.2)2118 (5.4)
 Mean ± SD18.06 ± 3.7815.95 ± 3.0515.09 ± 2.7118.96 ± 4.3517.27 ± 3.2218.69 ± 3.6016.95 ± 3.66