TABLE 6. Number, percentage, and proportion of infants born with use of assisted reproductive technology,* by preterm gestational age category and female patient’s reporting area of residence† at time of treatment — United States and Puerto Rico, 2014.
| Patient’s reporting area of residence | <37 weeks (PTB) |
<32 weeks (VPTB) |
||||
|---|---|---|---|---|---|---|
| ART infants |
All infants§ |
Proportion of ART PTB infants among all PTB infants (%) | ART infants |
All infants§ |
Proportion of ART VPTB infants among all VPTB infants (%) | |
| No. (%) | No. (%) | No. (%) | No. (%) | |||
| Alabama |
190 (41.2) |
9,051 (15.2) |
2.1 |
35 (7.6) |
1,719 (2.9) |
2.0 |
| Alaska |
20 (35.7) |
1,148 (10.1) |
1.7 |
6 (10.7) |
158 (1.4) |
3.8 |
| Arizona |
367 (35.7) |
10,100 (11.6) |
3.6 |
59 (5.7) |
1,595 (1.8) |
3.7 |
| Arkansas |
73 (37.2) |
4,857 (12.6) |
1.5 |
12 (6.1) |
743 (1.9) |
1.6 |
| California¶ |
2,490 (29.4) |
42,672 (8.5) |
5.8 |
458 (5.4) |
6,621 (1.3) |
6.9 |
| Colorado |
353 (36.0) |
6,627 (10.1) |
5.3 |
50 (5.1) |
1,022 (1.6) |
4.9 |
| Connecticut |
390 (29.7) |
3,410 (9.4) |
11.4 |
70 (5.3) |
600 (1.7) |
11.7 |
| Delaware |
43 (19.1) |
1,389 (12.7) |
3.1 |
9 (4.0) |
310 (2.8) |
2.9 |
| District of Columbia |
68 (18.9) |
1,269 (13.3) |
5.4 |
8 (2.2) |
247 (2.6) |
3.2 |
| Florida |
1,018 (35.3) |
28,724 (13.1) |
3.5 |
204 (7.1) |
5,024 (2.3) |
4.1 |
| Georgia¶ |
557 (37.8) |
16,504 (12.6) |
3.4 |
98 (6.6) |
3,003 (2.3) |
3.3 |
| Hawaii¶ |
175 (39.2) |
2,236 (12.1) |
7.8 |
40 (9.0) |
350 (1.9) |
11.4 |
| Idaho |
83 (38.1) |
2,239 (9.8) |
3.7 |
8 (3.7) |
298 (1.3) |
2.7 |
| Illinois |
1361 (33.5) |
18,760 (11.8) |
7.3 |
248 (6.1) |
3,438 (2.2) |
7.2 |
| Indiana |
305 (37.5) |
9,233 (11.0) |
3.3 |
43 (5.3) |
1,492 (1.8) |
2.9 |
| Iowa |
208 (33.1) |
4,471 (11.3) |
4.7 |
38 (6.0) |
779 (2.0) |
4.9 |
| Kansas |
136 (37.8) |
4,279 (10.9) |
3.2 |
25 (6.9) |
635 (1.6) |
3.9 |
| Kentucky |
216 (42.7) |
7,079 (12.6) |
3.1 |
46 (9.1) |
1,169 (2.1) |
3.9 |
| Louisiana |
244 (45.1) |
9,793 (15.2) |
2.5 |
57 (10.5) |
1,730 (2.7) |
3.3 |
| Maine |
45 (30.8) |
1,151 (9.1) |
3.9 |
8 (5.5) |
173 (1.4) |
4.6 |
| Maryland |
520 (26.6) |
9,051 (12.2) |
5.7 |
102 (5.2) |
1,620 (2.2) |
6.3 |
| Massachusetts |
945 (27.8) |
7,033 (9.8) |
13.4 |
163 (4.8) |
1,112 (1.5) |
14.7 |
| Michigan |
587 (39.2) |
13,547 (11.8) |
4.3 |
103 (6.9) |
2,401 (2.1) |
4.3 |
| Minnesota |
372 (31.8) |
7,000 (10.0) |
5.3 |
60 (5.1) |
1,161 (1.7) |
5.2 |
| Mississippi |
108 (43.7) |
6,193 (16.0) |
1.7 |
19 (7.7) |
1,085 (2.8) |
1.8 |
| Missouri |
305 (35.1) |
8,836 (11.7) |
3.5 |
48 (5.5) |
1,409 (1.9) |
3.4 |
| Montana |
50 (39.1) |
1,426 (11.5) |
3.5 |
13 (10.2) |
227 (1.8) |
5.7 |
| Nebraska |
153 (43.7) |
2,852 (10.6) |
5.4 |
29 (8.3) |
482 (1.8) |
6.0 |
| Nevada |
214 (38.7) |
4,678 (13.0) |
4.6 |
32 (5.8) |
730 (2.0) |
4.4 |
| New Hampshire |
87 (29.5) |
1,116 (9.1) |
7.8 |
19 (6.4) |
180 (1.5) |
10.6 |
| New Jersey |
1,208 (32.1) |
11,718 (11.3) |
10.3 |
204 (5.4) |
2,000 (1.9) |
10.2 |
| New Mexico |
45 (34.9) |
2,975 (11.4) |
1.5 |
11 (8.5) |
410 (1.6) |
2.7 |
| New York |
1,918 (29.7) |
25,398 (10.6) |
7.6 |
335 (5.2) |
4,023 (1.7) |
8.3 |
| North Carolina |
516 (33.3) |
14,550 (12.0) |
3.5 |
81 (5.2) |
2,929 (2.4) |
2.8 |
| North Dakota |
55 (38.7) |
1,126 (9.9) |
4.9 |
17 (12.0) |
182 (1.6) |
9.3 |
| Ohio |
601 (36.1) |
16,755 (12.0) |
3.6 |
102 (6.1) |
3,116 (2.2) |
3.3 |
| Oklahoma |
172 (41.1) |
6,881 (12.9) |
2.5 |
33 (7.9) |
1,098 (2.1) |
3.0 |
| Oregon |
239 (35.7) |
4,228 (9.3) |
5.7 |
37 (5.5) |
624 (1.4) |
5.9 |
| Pennsylvania |
661 (27.1) |
15,015 (10.6) |
4.4 |
121 (5.0) |
2,684 (1.9) |
4.5 |
| Puerto Rico |
61 (45.9) |
5,223 (15.2) |
1.2 |
9 (6.8) |
819 (2.4) |
—** |
| Rhode Island |
56 (24.1) |
1,107 (10.2) |
5.1 |
9 (3.9) |
193 (1.8) |
4.7 |
| South Carolina |
222 (40.7) |
7,765 (13.5) |
2.9 |
39 (7.1) |
1,432 (2.5) |
2.7 |
| South Dakota |
46 (36.5) |
1,346 (11.0) |
3.4 |
7 (5.6) |
192 (1.6) |
3.6 |
| Tennessee |
254 (40.1) |
10,221 (12.5) |
2.5 |
43 (6.8) |
1,593 (2.0) |
2.7 |
| Texas |
2,206 (42.1) |
49,527 (12.4) |
4.5 |
431 (8.2) |
7,738 (1.9) |
5.6 |
| Utah |
280 (38.8) |
5,196 (10.2) |
5.4 |
42 (5.8) |
668 (1.3) |
6.3 |
| Vermont |
40 (37.4) |
527 (8.6) |
7.6 |
7 (6.5) |
95 (1.5) |
7.4 |
| Virginia |
598 (27.8) |
11,098 (10.7) |
5.4 |
101 (4.7) |
2,017 (2.0) |
5.0 |
| Washington |
360 (27.8) |
8,505 (9.6) |
4.2 |
42 (3.2) |
1,297 (1.5) |
3.2 |
| West Virginia |
38 (37.6) |
2,683 (13.2) |
1.4 |
— (—)** |
449 (2.2) |
—** |
| Wisconsin |
273 (34.7) |
6,854 (10.2) |
4.0 |
57 (7.2) |
1,119 (1.7) |
5.1 |
| Wyoming |
14 (25.9) |
885 (11.5) |
1.6 |
— (—)** |
141 (1.8) |
—** |
| Total | 21,546 (33.2) | 456,307 (11.3) | 4.7 | 3,846 (5.9) | 76,332 (1.9) | 5.0 |
Abbreviations: ART = assisted reproductive technology; PTB = preterm birth; VPTB = very preterm birth.
* ART totals include infants conceived from ART procedures performed in 2013 and born in 2014 and infants conceived from ART procedures performed in 2014 and born in 2014. Total ART births exclude nonresidents and include only infants with gestational age data available.
† In cases of missing residency data (0.6%), the patient’s residence was assigned as the location in which the ART procedure was performed.
§ U.S. births include nonresidents (24).
¶ In three states, >2% of residency information was missing for procedures performed: California (2.7%), Georgia (2.1%), and Hawaii (2.1%). Overall, residency information was missing for 963 (0.6%) procedures performed and 366 (0.7%) live-birth deliveries.
** To protect confidentiality, cells with values from 1–4 are suppressed, as are data that can be used to derive cell values of 1–4. These values are included in totals.