Distribution of MAIN score in the overall population and in the subgroups stratified by specific maternal or newborn characteristics
| N (%) | Overall mean (95% CI) | Mean MAIN score (% across morbidity categories) | ||||
|---|---|---|---|---|---|---|
| Nil/Minimal | Mild | Moderate | Severe | |||
| *Includes face presentation, breech or transverse lie; †reference category for statistical significance where the number of categories for comparison is >2; missing cases: γ1 = 6; γ2 = 8; γ3 = 6; γ4 = 15, γ5 = 26. | ||||||
| Overall population | 2892 (100) | 70.3 (64.2, 76.4) | 11.7 (84.6) | 282.6 (11.3) | 619.7 (3.1) | 977.1 (1.0) |
| Subgroups | ||||||
| Sex | ||||||
| Female | 1412 (48.8) | 60.9 (52.7, 69.0) | 10.8 (86.8) | 277.8 (9.8) | 622.8 (2.6) | 999.3 (0.8) |
| Male | 1480 (51.2) | 81.1 (71.8, 90.3) | 12.6 (82.5) | 286.2 (12.6) | 617.3 (3.6) | 964.3 (1.3) |
| Number of babies | ||||||
| Singleton | 2809 (97.1) | 66.5 (60.4, 72.5) | 11.6 (85.6) | 282.1 (10.6) | 618.6 (2.8) | 974.6 (0.9) |
| Multiple | 83 (2.9) | 231.8 (170.7, 293.0) | 22.2 (49.4) | 288.6 (33.7) | 627.1 (12.0) | 993.7 (4.8) |
| Route of delivery, γ1 | ||||||
| Vaginal | 2284 (79.1) | 55.5 (49.7, 61.3) | 10.6 (87.4) | 284 (9.8) | 613.2 (2.4) | 926.0 (0.4) |
| Caesarean | 602 (20.9) | 130.8 (111.3, 150.2) | 12.8 (73.8) | 277 (16.9) | 630 (5.8) | 999.0 (3.5) |
| Malpresentation at delivery*, γ2 | ||||||
| No | 2664 (92.4) | 61.7 (56.0, 67.5) | 11.3 (86.1) | 280.1 (10.7) | 615.3 (2.7) | 975.53 (0.6) |
| Yes | 220 (7.6) | 185.7 (146.4, 224.9) | 17.9 (66.4) | 295.0 (18.6) | 636.8 (8.2) | 978.5 (6.8) |
| Hospital care type, γ3 | ||||||
| Community | 1481 (51.3) | 55.1 (48.2, 62.0) | 12.3 (87.2) | 257.8 (10.3) | 619.9 (2.1) | 883.9 (0.5) |
| Tertiary | 1405 (48.6) | 88.2 (77.8, 98.7) | 11.1 (82.3) | 306.5 (11.8) | 619.4 (4.3) | 1005.5 (1.6) |
| Maternal age (y) | ||||||
| <35 | 2421 (83.7) | 69.3 (62.5, 76.0) | 11.3 (85.1) | 279.8 (10.7) | 616.7 (3.2) | 998.7 (1.0) |
| ⩾35 | 471 (16.3) | 81.2 (65.4, 96.9) | 13.5 (82.0) | 293.8 (14.0) | 636.6 (2.8) | 891.0 (1.3) |
| Drug misuse, γ4 | ||||||
| No drug misuse† | 2697 (93.7) | 68.1 (61.8, 74.4) | 11.6 (85.3) | 280.6 (10.8) | 626.7 (3.0) | 979.9 (0.9) |
| Recreational | 121 (4.2) | 85.1 (52.9, 117.2) | 15.3 (81.8) | 282.4 (12.4) | 548.6 (4.1) | 899.5 (1.7) |
| Street | 28 (1.0) | 115.5 (50.5, 180.4) | 23.5 (71.4) | 310.6 (25.0) | 589.0 (3.6) | 0 (0) |
| Multiple | 31 (1.1) | 225.8 (128.4, 323.2) | 26.9 (45.2) | 299.3 (38.7) | 556.3 (9.7) | 869.5 (6.5) |
| Smoking, γ5 | ||||||
| No smoking† | 2083 (72.7) | 65.3 (58.2, 72.3) | 11.3 (85.8) | 273.3 (10.3) | 616.4 (3.0) | 1019.0 (0.9) |
| ⩽10 cigarettes/day | 464 (16.2) | 82.4 (66.8, 98.0) | 14.0 (81.0) | 287.6 (14.9) | 639.2 3.2) | 887.7 (0.9) |
| >10 cigarettes/day | 319 (11.1) | 86.6 (65.6, 107.5) | 12.1 (82.4) | 309.5 (11.9) | 611.4 (3.8) | 888.7 (1.9) |
| Gestational age (weeks), four categories | ||||||
| 28–32 | 59 (2.0) | 540.3 (468.7, 612.0) | 73.3 (11.9) | 385.0 (32.2) | 644.0 (40.7) | 955.3 (15.3) |
| >32–36 | 265 (9.2) | 238.1 (206.8, 269.3) | 37.8 (50.2) | 312.8 (33.6) | 610.6 (11.3) | 915.2 (4.9) |
| >36–40† | 2180 (75.4) | 42.6 (37.4, 47.8) | 10.1 (90.1) | 266.0 (8.3) | 611.8 (1.3) | 1143.7 (0.3) |
| >40 | 388 (13.4) | 46.7 (34.6, 58.9) | 9.8 (87.9) | 239.4 (9.8) | 607.4 (2.1) | 812.0 (0.3) |
| Gestational age (weeks), two categories | ||||||
| <37 weeks | 324 (11.2) | 293.1 (261.8, 324.4) | 39.6 (5.7) | 325.4 (33.1) | 625.4 (60.0) | 1102.3 (6.8) |
| ⩾37 weeks | 2568 (88.8) | 43.2 (38.4, 48.0) | 10.0 (94.3) | 261.4 (66.9) | 610.8 (40.0) | 931.6 (0.3) |
| Birth weight (g) | ||||||
| ⩾4500 | 55 (1.9) | 84.6 (31.1, 138.2) | 20.0 (83.6) | 280.9 (12.7) | 610.0 (1.8) | 1159.0 (1.8) |
| 4000–4499 | 288 (10.0) | 60.7 (45.0, 76.3) | 11.5 (82.3) | 226.8 (15.3) | 678.7 (2.4) | 0 (0) |
| 2500–3999† | 2312 (79.9) | 44.0 (39.0, 49.1) | 10.2 (89.8) | 267.2 (8.3) | 587.5 (1.6) | 1116.0 (0.3) |
| 1501–2499 | 210 (7.3) | 316.4 (277.6, 355.3) | 44.8 (40.5) | 346.1 (34.8) | 623.6 (16.2) | 898.8 (8.6) |
| <1500 | 27 (0.9) | 574.5 (459.3, 689.7) | 0 (3.7) | 353.5 (40.7) | 678.0 (40.7) | 1041.3 (14.8) |