Misra et al14 | India; university hospital | 44 | 14 (32%) | NR | Slow respiratory rate; low birth weight |
Shakunthala et al6 | India; university hospital neonatal unit | 50 | 24 (48%) | 23/17 | First week presentation; low birth weight |
Mathur et al9 | India; university hospital neonatal unit | 103 | 32 (31%) | NR | A-aDo2 >250 mm Hg |
Bang et al45 | India; community based intervention study | 65 | 10 (15%) | NR | Referral indications: stridor, unconsciousness, convulsions or inability to suck |
Singhi & Singhi15 | India; university hospital emergency department presentations | 89 | 7 (8%) | NR | Slow respiratory rate |
Webber et al7 | UK; university hospital neonatal unit | 76 | 11 (14%) | 35/10 | First week presentation |
Total | | 427 | 98 (23%) | | |