Table 2. Utilization rates of RV-coded hospitalizations, outpatient visits, and ER visits in commercially insured and Medicaid populations, overall and stratified by age and pre/post-RV vaccine availability and calendar time.
|
Incidence rate per 10 000 person-years (95% CI) | ||||||
|---|---|---|---|---|---|---|
| Commercial | Medicaid | |||||
| Hospitalizations | Outpatient visits | ER visits | Hospitalizations | Outpatient visits | ER visits | |
| Overall, <5 y | 9.74 (9.51–9.96) |
9.30 (9.08–9.52) |
7.26 (7.06–7.45) |
17.99 (17.43–18.56) |
17.90 (17.35–18.47) |
24.02 (23.38–24.68) |
| Pre1 | 16.67 (16.19–17.15) |
13.20 (12.78–13.63) |
11.26 (10.87–11.66) |
19.78 (19.14–20.45) |
19.39 (18.75–20.05) |
27.61 (26.84–28.40) |
| Post1 | 5.58 (5.37–5.80) |
6.96 (6.72–7.20) |
4.85 (4.66–5.06) |
10.53 (9.60–11.56) |
11.72 (10.73–12.80) |
9.11 (8.24–10.07) |
| Age | ||||||
| <1 y | ||||||
| Pre1 | 23.39 (21.93–24.94) |
22.05 (20.64–23.56) |
15.73 (14.54–17.01) |
36.42 (34.45–38.50) |
39.41 (37.36–41.58) |
55.55 (53.11–58.11) |
| Post1 | 6.17 (5.61–6.78) |
9.54 (8.84–10.30) |
5.37 (4.85–5.94) |
15.17 (13.07–17.62) |
17.73 (15.44–20.36) |
13.50 (11.52–15.81) |
| 0 to <2 mo | ||||||
| Pre1 | 9.36 (7.43–11.79) |
6.89 (5.26–9.02) |
5.33 (3.93–7.24) |
20.72 (17.32–24.78) |
16.40 (13.41–20.06) |
22.10 (18.58–26.28) |
| Post1 | 4.58 (3.49–6.00) |
5.98 (4.72–7.59) |
4.05 (3.03–5.40) |
11.60 (7.40–18.18) |
15.26 (10.31–22.58) |
9.76 (5.98–15.94) |
| 2 to <4 mo | ||||||
| Pre1 | 11.04 (8.88–13.73) |
10.90 (8.76–13.58) |
7.77 (5.99–10.07) |
28.78 (24.74–33.48) |
27.24 (23.32–31.82) |
40.43 (35.59–45.93) |
| Post1 | 4.43 (3.38–5.82) |
8.27 (6.78–10.09) |
3.75 (2.79–5.04) |
21.25 (15.52–29.08) |
19.07 (13.69–26.56) |
16.89 (11.88–24.01) |
| 4 to <6 mo | ||||||
| Pre1 | 21.10 (17.96–24.79) |
17.97 (15.09–21.39) |
12.69 (10.31–15.62) |
32.78 (28.47–37.75) |
40.42 (35.60–45.90) |
49.93 (44.54–55.98) |
| Post1 | 3.36 (2.47–4.56) |
8.93 (7.40–10.77) |
3.69 (2.75–4.94) |
11.87 (7.95–17.70) |
12.85 (8.75–18.88) |
8.90 (5.61–14.13) |
| 6 to <12 mo | ||||||
| Pre1 | 35.54 (32.87–38.44) |
34.92 (32.27–37.79) |
24.77 (22.56–27.21) |
45.90 (42.75–49.28) |
51.39 (48.05–54.96) |
74.58 (70.54–78.86) |
| Post1 | 8.34 (7.42–9.38) |
11.42 (10.33–12.63) |
7.00 (6.16–7.95) |
15.41 (12.54–18.95) |
19.69 (16.40–23.64) |
15.07 (12.23–18.57) |
| 1 to <2 y | ||||||
| Pre1 | 32.72 (31.27–34.25) |
24.36 (23.11–25.68) |
22.35 (21.15–23.61) |
37.04 (35.08–39.10) |
33.15 (31.30–35.10) |
49.34 (47.07–51.71) |
| Post1 | 10.75 (10.11–11.44) |
12.05 (11.37–12.78) |
9.26 (8.66–9.90) |
18.03 (15.40–21.10) |
19.31 (16.58–22.48) |
14.77 (12.41–17.58) |
| 2 to <5 y | ||||||
| Pre1 | 7.23 (6.83–7.64) |
5.06 (4.73–5.41) |
4.69 (4.38–5.03) |
6.65 (6.17–7.17) |
6.45 (5.98–6.97) |
8.93 (8.37–9.53) |
| Post1 | 3.36 (3.16–3.58) |
3.59 (3.38–3.82) |
2.97 (2.78–3.18) |
4.92 (4.07–5.95) |
5.06 (4.20–6.10) |
4.32 (3.53–5.29) |
| Calendar time | ||||||
| 7/2000–6/2001 | 19.13 (16.63–21.99) |
9.42 (7.72–11.49) |
5.73 (4.44–7.39) |
- | - | - |
| 7/2001–6/2002 | 18.83 (16.97–20.89) |
11.95 (10.49–13.62) |
10.58 (9.21–12.15) |
- | - | - |
| 7/2002–6/2003 | 16.28 (14.96–17.72) |
12.45 (11.30–13.71) |
9.07 (8.10–10.16) |
17.30 (16.03–18.68) |
19.04 (17.70–20.48) |
22.76 (21.29–24.33) |
| 7/2003–6/2004 | 20.26 (19.00–21.61) |
14.47 (13.41–15.61) |
13.11 (12.10–14.21) |
19.42 (18.07–20.89) |
22.40 (20.94–23.97) |
26.81 (25.21–28.52) |
| 7/2004–6/2005 | 20.14 (19.03–21.32) |
15.90 (14.92–16.96) |
15.09 (14.12–16.11) |
19.21 (17.84–20.70) |
17.72 (16.39–19.14) |
29.42 (27.70–31.24) |
| 7/2005–6/2006 | 18.55 (17.56–19.60) |
16.63 (15.69–17.62) |
14.76 (13.88–15.70) |
29.17 (27.44–31.01) |
23.82 (22.26–25.49) |
43.29 (41.17–45.52) |
| 7/2006–6/2007 | 13.29 (12.52–14.11) |
14.12 (13.33- 14.96) |
10.75 (10.06–11.49) |
9.85 (8.62–11.25) |
12.04 (10.67–13.58) |
8.94 (7.77–10.28) |
| 7/2007–6/2008 | 4.78 (4.39–5.21) |
6.81 (6.33 – 7.32) |
4.27 (3.90–4.68) |
7.69 (6.33–9.34) |
8.37 (6.95–10.09) |
6.17 (4.96–7.67) |
| 7/2008–6/2009 | 6.37 (5.96–6.80) |
8.39 (7.93 – 8.89) |
5.85 (5.46–6.26) |
9.98 (8.48–11.74) |
10.46 (8.92 – 12.26) |
8.33 (6.97–9.95) |
| 7/2009–6/2010 | 0.94 (0.78–1.13) |
1.73 (1.51–1.98) |
0.89 (0.74–1.07) |
- | - | - |
Notes: CI, confidence interval; RV, rotavirus; ER, emergency room;1Pre- and post-RV vaccine availability periods were defined as the time through January 1, 2007 and the time after that date, respectively.