Table 3

Apgar score at 1 and 5 min and rate ratios for special needs status among singleton term live births in British Columbia, Canada

Apgar scoreTotal number of childrenSpecial needs
No. with outcome (%)Rate ratio (95% CI)
CrudeAdjusted*
1 min Apgar148 6993644 (2.5)
 022<5 (4.6)1.94 (0.28 to 13.4)1.44 (0.23 to 8.97)
 146326 (5.6)2.40 (1.55 to 3.72)2.23 (1.44 to 3.46)
 2105445 (4.3)1.82 (1.26 to 2.63)1.72 (1.19 to 2.48)
 3174353 (3.0)1.30 (0.91 to 1.84)1.23 (0.86 to 1.74)
 4255469 (2.7)1.15 (0.83 to 1.60)1.09 (0.79 to 1.52)
 54032136 (3.4)1.44 (1.09 to 1.91)1.39 (1.05 to 1.85)
 66894191 (2.8)1.18 (0.90 to 1.55)1.16 (0.89 to 1.52)
 711 903298 (2.5)1.07 (0.83 to 1.38)1.06 (0.82 to 1.37)
 838 300946 (2.5)1.06 (0.83 to 1.34)1.07 (0.84 to 1.35)
 978 7011808 (2.3)0.98 (0.78 to 1.24)1.00 (0.79 to 1.26)
 10303371 (2.3)1.00 (reference)1.00 (reference)
 P for trend<0.001
 Per one unit of Apgar0.99 (0.98 to 0.99)
5 min Apgar
 017<5 (<29.4)2.51 (0.37 to 16.8)2.59 (0.41 to 16.3)
 115<5 (<33.3)5.69 (1.56 to 20.7)5.13 (1.45 to 18.1)
 228<5 (<17.9)6.10 (2.46 to 15.2)5.17 (2.01 to 13.3)
 3839 (10.8)4.63 (2.49 to 8.61)3.78 (2.03 to 7.02)
 41037 (6.8)2.90 (1.41 to 5.95)2.59 (1.25 to 5.35)
 52898 (2.8)1.18 (0.59 to 2.35)1.10 (0.56 to 2.16)
 692836 (3.9)1.66 (1.19 to 2.30)1.49 (1.07 to 2.06)
 7234274 (3.2)1.35 (1.07 to 1.70)1.28 (1.01 to 1.61)
 87597225 (3.0)1.26 (1.09 to 1.46)1.20 (1.03 to 1.38)
 9100 2812411 (2.4)1.03 (0.95 to 1.11)1.01 (0.94 to 1.09)
 1037 016867 (2.3)1.00 (reference)1.00 (reference)
 P for trend<0.001
 Per one unit of Apgar0.98 (0.97 to 0.99)
  • *Adjusted for child’s sex (male vs female), child’s age at EDI completion (years), socioeconomic status (first quintile, second quintile, third quintile, fourth quintile vs fifth quintile), child’s first language (other vs English), birth order (2, 3, +4 vs 1), birth weight-for-gestational age (large, small vs appropriate) and gestational age (weeks).

  • EDI, Early Development Instrument.